ABCDEFGHIJKLMNOPQRSTUVWXYZ
ab (1)
 Data1: Astatine
 
abandon (1)
 On This Day... 26 June
 
abandoned (4)
 Country: Oceans / Seas
 Data1: Manganese
 Production: Manganese
 Production: Uranium
 
abbot (1)
 On This Day... 19 November
 
abbreviated (1)
 Document: Understanding Electron Configuration Tables
 
abbreviation (3)
 Data1: Francium
 Data1: Lead
 Data1: Sodium
 
abdominal (1)
 Compounds: Iron
 
abel (1)
 On This Day... 17 July
 
abelson (6)
 Biography: Edwin Mattison McMillan
 Biography: Philip Hauge Abelson
 Data1: Neptunium
 Data1: Plutonium
 On This Day... 27 April
 On This Day... 8 June
 
aberdeen (1)
 Biography: Frederick Soddy
 
aberrant (1)
 Data1: Holmium
 
abilities (1)
 Biography: Irene Joliot-Curie
 
ability (27)
 Biography: Arthur Jeffrey Dempster
 Biography: Jöns Jacob Berzelius
 Compounds: Boron
 Compounds: Carbon
 Compounds: Fluorine
 Compounds: Silver
 Compounds: Sodium
 Compounds: Titanium
 Compounds: Vanadium
 Compounds: Zirconium
 Data1: Beryllium
 Data1: Hafnium
 Data1: Iodine
 Data1: Mercury
 Data1: Palladium
 Data1: Titanium
 Document: The Transition Metals (Groups 3 to 12)
 Glossary: Electronegativity
 Glossary: Heat Capacity
 Glossary: Moh's Scale of Hardness
 Glossary: Plasma
 Glossary: Thermal Conductivity
 Glossary: Vickers Hardness
 Isotope: Uranium
 Production: Iodine
 Production: Technetium
 Reactions: Iridium
 
ablate (1)
 Compounds: Hafnium
 
abney (1)
 On This Day... 24 July
 
abnormalities (1)
 Glossary: Teratogenic
 
abo (1)
 Biography: Johan Gadolin
 
abraham (2)
 Allotrope: Carbon
 Data1: Helium
 
abrasive (3)
 Compounds: Zirconium
 Glossary: Allotrope
 On This Day... 27 September
 
abrasives (2)
 Compounds: Tungsten
 Compounds: Zirconium
 
abrupt (2)
 Allotrope: Arsenic
 Glossary: Air
 
abs (1)
 Compounds: Antimony
 
absence (8)
 Data1: Technetium
 Glossary: Emission Spectrum
 Glossary: Magnetic Ordering
 Glossary: Thermal Conductivity
 Production: Tellurium
 Reactions: Antimony
 Reactions: Arsenic
 Reactions: Iron
 
absent (1)
 Production: Zinc
 
absolute (13)
 Biography: Joseph Louis Gay-Lussac
 Data1: Helium
 Equation: Charles' Law
 Equation: Combined Gas Law
 Equation: Ideal gas law
 Equation: Osmotic pressure
 Equation: van't Hoff equation
 Glossary: Gas
 Glossary: Kelvin (absolute temperature)
 Glossary: Moh's Scale of Hardness
 Glossary: Temperature
 On This Day... 17 December
 On This Day... 26 June
 
absolutely (1)
 Data1: Sodium
 
absorb (20)
 Compounds: Barium
 Compounds: Copper
 Compounds: Lithium
 Compounds: Silicon
 Compounds: Sodium
 Data1: Aluminium
 Data1: Beryllium
 Data1: Calcium
 Data1: Hafnium
 Data1: Palladium
 Data1: Samarium
 Data1: Zirconium
 Glossary: Deliquescent
 Glossary: Emission Spectrum
 Glossary: Endothermic
 Isotope: Uranium
 On This Day... 2 February
 Production: Oxygen
 Production: Technetium
 Production: Uranium
 
absorbant (1)
 Compounds: Zinc
 
absorbed (12)
 Compounds: Phosphorus
 Data1: Copper
 Data1: Rhodium
 Data1: Selenium
 Glossary: Absorption Spectrum
 Glossary: Alpha Decay
 Glossary: Emission Spectrum
 Glossary: Enthalpy Change of Fusion (Heat of Fusion)
 Glossary: Gamma Ray
 On This Day... 12 December
 On This Day... 16 February
 Production: Cadmium
 
absorber (5)
 Data1: Barium
 Data1: Erbium
 Data1: Samarium
 Isotope: Lithium
 Isotope: Xenon
 
absorbing (3)
 Glossary: Air
 On This Day... 31 July
 Production: Iodine
 
absorbs (8)
 Biography: Lise Meitner
 Data1: Dysprosium
 Data1: Holmium
 Data1: Titanium
 Glossary: Absorption Spectrum
 Glossary: Desiccant
 Glossary: Hygroscopic
 Isotope: Uranium
 
absorptiometry (1)
 Isotope: Gadolinium
 
absorption (17)
 Biography: Pierre Jules César Janssen
 Compounds: Magnesium
 Compounds: Silver
 Country: Outer space
 Data1: Erbium
 Data1: Holmium
 Data1: Polonium
 Data1: Samarium
 Data1: Thulium
 Data1: Ytterbium
 Glossary: Absorption Spectrum
 Glossary: Double Beta Decay
 Glossary: Emission Spectrum
 On This Day... 24 January
 On This Day... 31 July
 Production: Cadmium
 Production: Technetium
 
abstract (1)
 Data1: Carbon
 
abstracts (1)
 Glossary: CAS
 
absurdities (1)
 Biography: Jöns Jacob Berzelius
 
abundance (207)
 Compounds: Carbon
 Country: Outer space
 Data1: Aluminium
 Data1: Antimony
 Data1: Argon
 Data1: Arsenic
 Data1: Barium
 Data1: Beryllium
 Data1: Bismuth
 Data1: Boron
 Data1: Bromine
 Data1: Cadmium
 Data1: Caesium
 Data1: Calcium
 Data1: Carbon
 Data1: Cerium
 Data1: Chlorine
 Data1: Chromium
 Data1: Cobalt
 Data1: Copper
 Data1: Dysprosium
 Data1: Erbium
 Data1: Europium
 Data1: Fluorine
 Data1: Gadolinium
 Data1: Gallium
 Data1: Germanium
 Data1: Gold
 Data1: Hafnium
 Data1: Helium
 Data1: Holmium
 Data1: Hydrogen
 Data1: Indium
 Data1: Iodine
 Data1: Iridium
 Data1: Iron
 Data1: Krypton
 Data1: Lanthanum
 Data1: Lead
 Data1: Lithium
 Data1: Lutetium
 Data1: Magnesium
 Data1: Manganese
 Data1: Mercury
 Data1: Molybdenum
 Data1: Neodymium
 Data1: Neon
 Data1: Nickel
 Data1: Niobium
 Data1: Nitrogen
 Data1: Osmium
 Data1: Oxygen
 Data1: Palladium
 Data1: Phosphorus
 Data1: Platinum
 Data1: Polonium
 Data1: Potassium
 Data1: Praseodymium
 Data1: Protactinium
 Data1: Radium
 Data1: Radon
 Data1: Rhenium
 Data1: Rhodium
 Data1: Rubidium
 Data1: Ruthenium
 Data1: Samarium
 Data1: Scandium
 Data1: Selenium
 Data1: Silicon
 Data1: Silver
 Data1: Sodium
 Data1: Strontium
 Data1: Sulfur
 Data1: Tantalum
 Data1: Tellurium
 Data1: Terbium
 Data1: Thallium
 Data1: Thorium
 Data1: Thulium
 Data1: Tin
 Data1: Titanium
 Data1: Tungsten
 Data1: Uranium
 Data1: Vanadium
 Data1: Xenon
 Data1: Ytterbium
 Data1: Yttrium
 Data1: Zinc
 Data1: Zirconium
 Document: Abundance of the Elements in the Solar System
 Glossary: Abundance
 Glossary: Rare Earth Elements
 Isotope: Actinium
 Isotope: Aluminium
 Isotope: Americium
 Isotope: Antimony
 Isotope: Argon
 Isotope: Arsenic
 Isotope: Astatine
 Isotope: Barium
 Isotope: Berkelium
 Isotope: Beryllium
 Isotope: Bismuth
 Isotope: Boron
 Isotope: Bromine
 Isotope: Cadmium
 Isotope: Caesium
 Isotope: Calcium
 Isotope: Californium
 Isotope: Carbon
 Isotope: Cerium
 Isotope: Chlorine
 Isotope: Chromium
 Isotope: Cobalt
 Isotope: Copper
 Isotope: Curium
 Isotope: Dysprosium
 Isotope: Einsteinium
 Isotope: Erbium
 Isotope: Europium
 Isotope: Fermium
 Isotope: Fluorine
 Isotope: Francium
 Isotope: Gadolinium
 Isotope: Gallium
 Isotope: Germanium
 Isotope: Gold
 Isotope: Hafnium
 Isotope: Hassium
 Isotope: Helium
 Isotope: Holmium
 Isotope: Hydrogen
 Isotope: Indium
 Isotope: Iodine
 Isotope: Iridium
 Isotope: Iron
 Isotope: Krypton
 Isotope: Lanthanum
 Isotope: Lead
 Isotope: Lithium
 Isotope: Lutetium
 Isotope: Magnesium
 Isotope: Manganese
 Isotope: Mendelevium
 Isotope: Mercury
 Isotope: Molybdenum
 Isotope: Neodymium
 Isotope: Neon
 Isotope: Neptunium
 Isotope: Nickel
 Isotope: Niobium
 Isotope: Nitrogen
 Isotope: Nobelium
 Isotope: Osmium
 Isotope: Oxygen
 Isotope: Palladium
 Isotope: Phosphorus
 Isotope: Platinum
 Isotope: Plutonium
 Isotope: Polonium
 Isotope: Potassium
 Isotope: Praseodymium
 Isotope: Promethium
 Isotope: Protactinium
 Isotope: Radium
 Isotope: Radon
 Isotope: Rhenium
 Isotope: Rhodium
 Isotope: Rubidium
 Isotope: Ruthenium
 Isotope: Samarium
 Isotope: Scandium
 Isotope: Selenium
 Isotope: Silicon
 Isotope: Silver
 Isotope: Sodium
 Isotope: Strontium
 Isotope: Sulfur
 Isotope: Tantalum
 Isotope: Technetium
 Isotope: Tellurium
 Isotope: Terbium
 Isotope: Thallium
 Isotope: Thorium
 Isotope: Thulium
 Isotope: Tin
 Isotope: Titanium
 Isotope: Tungsten
 Isotope: Uranium
 Isotope: Vanadium
 Isotope: Xenon
 Isotope: Ytterbium
 Isotope: Yttrium
 Isotope: Zinc
 Isotope: Zirconium
 Production: Beryllium
 Production: Boron
 Production: Chlorine
 Production: Copper
 Production: Helium
 Production: Holmium
 Production: Mercury
 Production: Neon
 Production: Polonium
 Production: Tellurium
 Production: Tin
 Production: Yttrium
 
abundances (7)
 Country: Outer space
 Glossary: Abundance
 Glossary: Allobar
 Isotope: Nickel
 On This Day... 8 July
 Production: Neon
 Production: Tellurium
 
abundant (53)
 Compounds: Carbon
 Country: China
 Country: Outer space
 Data1: Aluminium
 Data1: Antimony
 Data1: Calcium
 Data1: Cerium
 Data1: Dysprosium
 Data1: Gold
 Data1: Helium
 Data1: Hydrogen
 Data1: Indium
 Data1: Iron
 Data1: Magnesium
 Data1: Manganese
 Data1: Neon
 Data1: Potassium
 Data1: Silicon
 Data1: Sodium
 Data1: Thorium
 Data1: Thulium
 Data1: Titanium
 Document: The Halogens (Group 17)
 Glossary: Allotrope
 Glossary: Doubly Magic
 Glossary: Rare Earth Elements
 Isotope: Aluminium
 Isotope: Oxygen
 Production: Aluminium
 Production: Antimony
 Production: Bismuth
 Production: Carbon
 Production: Cerium
 Production: Dysprosium
 Production: Helium
 Production: Holmium
 Production: Indium
 Production: Lithium
 Production: Molybdenum
 Production: Neon
 Production: Nitrogen
 Production: Potassium
 Production: Rubidium
 Production: Scandium
 Production: Silicon
 Production: Strontium
 Production: Tellurium
 Production: Thallium
 Production: Thorium
 Production: Titanium
 Production: Uranium
 Production: Yttrium
 Production: Zirconium
 
abundantly (4)
 Country: Oceans / Seas
 Data1: Lead
 Data1: Rubidium
 Production: Lead
 
abuse (1)
 Biography: Julius Caesar Scaliger
 
abusive (1)
 Biography: Julius Caesar Scaliger
 
ac (10)
 Atomic data: Actinium
 Data1: Actinium
 Data1: Francium
 Glossary: Actinides
 Glossary: Actinoids
 Isotope: Actinium
 Isotope: Protactinium
 Isotope: Radium
 Reactions: Actinium
 Spectrum: Actinium
 
ac+ (1)
 Atomic data: Actinium
 
ac+3 (1)
 Data2: Actinium
 
ac2o3 (1)
 Reactions: Actinium
 
acad (1)
 On This Day... 3 July
 
academic (7)
 Biography: Irene Joliot-Curie
 Biography: John William Strutt Rayleigh
 Biography: Lise Meitner
 Biography: Robert Wilhelm Bunsen
 Data1: Bismuth
 Data1: Manganese
 Isotope: Bismuth
 
academics (1)
 Biography: Irene Joliot-Curie
 
academie (2)
 Biography: Pierre Curie
 Biography: Robert Wilhelm Bunsen
 
academy (9)
 Biography: Antoine-Laurent de Lavoisier
 Biography: Carl Gustav Mosander
 Biography: Dmitriy Ivanovich Mendeleyev
 Biography: Ferdinand Reich
 Biography: Jöns Jacob Berzelius
 Biography: Karl Wilhelm Scheele
 Biography: Louis Jacques Thenard
 Biography: Louis Nicolas Vauquelin
 On This Day... 14 October
 
accelerate (1)
 Data1: Tin
 
accelerated (3)
 Compounds: Sodium
 Data1: Meitnerium
 Data1: Rutherfordium
 
accelerating (1)
 Data1: Ununbium
 
accelerator (8)
 Data1: Dubnium
 Data1: Lawrencium
 Data1: Nobelium
 Data1: Roentgenium
 Data1: Ununbium
 Isotope: Helium
 Production: Lawrencium
 Production: Nobelium
 
accelerators (3)
 Biography: Edwin Mattison McMillan
 Glossary: Abundance
 Isotope: Cobalt
 
accept (1)
 Glossary: Group
 
accepted (9)
 Biography: Hans Christian Oersted
 Biography: Ida Eva Tacke Noddack
 Biography: Robert Wilhelm Bunsen
 Data1: Bohrium
 Data1: Niobium
 Data1: Nobelium
 Data1: Praseodymium
 Data1: Roentgenium
 Data1: Vanadium
 
accepting (1)
 Biography: Robert Wilhelm Bunsen
 
acceptors (1)
 Glossary: Base
 
accepts (1)
 Glossary: Atomic Charge
 
access (2)
 Compounds: Nitrogen
 Data1: Copper
 
accessible (1)
 Data1: Copper
 
accident (7)
 Biography: Michael Faraday
 Compounds: Iodine
 Data1: Phosphorus
 Glossary: Doubly Magic
 Glossary: X-Rays
 Isotope: Iodine
 Isotope: Sodium
 
accidental (2)
 Data1: Arsenic
 Data1: Phosphorus
 
accidentally (2)
 Biography: Irene Joliot-Curie
 Biography: Pierre Curie
 
accidents (2)
 Compounds: Sodium
 Data1: Phosphorus
 
acclaim (1)
 Biography: Robert Wilhelm Bunsen
 
accompanied (3)
 Biography: Julius Caesar Scaliger
 Production: Platinum
 Reactions: Arsenic
 
accompany (1)
 Glossary: Gamma Ray
 
accomplished (2)
 Data1: Zinc
 Production: Beryllium
 
accomplishments (2)
 Biography: Michael Faraday
 Biography: Sir Humphry Davy
 
according (15)
 Biography: Dmitriy Ivanovich Mendeleyev
 Biography: Julius Caesar Scaliger
 Biography: Robert Wilhelm Bunsen
 Compounds: Phosphorus
 Data1: Carbon
 Data1: Lithium
 Document: The Noble Gases (Group 18)
 Glossary: Goldschmidt Classification
 Glossary: Group
 Glossary: Noble Gasses (inert gasses)
 Glossary: Refractory
 Production: Chlorine
 Production: Gold
 Production: Helium
 Production: Radon
 
accordingly (2)
 Data1: Gadolinium
 Glossary: Vickers Hardness
 
account (10)
 Allotrope: Carbon
 Biography: John William Strutt Rayleigh
 Biography: Julius Caesar Scaliger
 Biography: Marie Curie (Marya Sklodowska)
 Biography: Sir Humphry Davy
 Data1: Chromium
 Data1: Mercury
 Glossary: Atomic Mass
 Glossary: Isotope
 On This Day... 27 January
 
accounted (2)
 Data1: Europium
 Production: Gold
 
accounts (2)
 Biography: Robert Wilhelm Bunsen
 Data1: Indium
 
accredited (1)
 Biography: Antoine-Laurent de Lavoisier
 
accumulate (5)
 Biography: Philip Hauge Abelson
 Compounds: Aluminium
 Data1: Astatine
 Data1: Berkelium
 Production: Radon
 
accumulated (2)
 Data1: Neodymium
 Production: Bromine
 
accumulates (5)
 Data1: Astatine
 Data1: Berkelium
 Data1: Curium
 Data1: Erbium
 Data1: Ruthenium
 
accumulative (1)
 Data1: Lead
 
accuracy (3)
 Biography: Julius Caesar Scaliger
 Biography: Robert Wilhelm Bunsen
 Compounds: Molybdenum
 
accurate (15)
 Biography: (Gabriel) Daniel Fahrenheit
 Biography: Arthur Jeffrey Dempster
 Biography: Dmitriy Ivanovich Mendeleyev
 Biography: Henry Cavendish
 Biography: Jean Charles Galissard de Marignac
 Biography: Joseph Louis Gay-Lussac
 Biography: Julius Caesar Scaliger
 Biography: Morris Travers
 Data1: Caesium
 Document: The Noble Gases (Group 18)
 Equation: Ideal gas law
 Glossary: pH
 On This Day... 29 December
 On This Day... 29 January
 On This Day... 31 January
 
accurately (4)
 Biography: Joseph Louis Gay-Lussac
 Data1: Helium
 Data1: Hydrogen
 Isotope: Plutonium
 
acetaldehyde (2)
 Compounds: Mercury
 Data2: Iodine
 
acetaminophen (1)
 Data1: Plutonium
 
acetate (5)
 Biography: Robert Wilhelm Bunsen
 Compounds: Palladium
 Compounds: Uranium
 Compounds: Zinc
 Data1: Zinc
 
acetic (3)
 Biography: Louis Jacques Thenard
 Compounds: Copper
 Glossary: Acid
 
acetone (1)
 Data2: Platinum
 
acetonitrile (1)
 Data2: Indium
 
acetylcholine (1)
 Compounds: Magnesium
 
acetylene (11)
 Biography: Sir William Ramsay
 Compounds: Mercury
 Data2: Bromine
 Data2: Chlorine
 Data2: Copper
 Data2: Iodine
 Data2: Mercury
 Data2: Silver
 On This Day... 14 February
 On This Day... 27 October
 On This Day... 7 September
 
acetylsalicylic (1)
 On This Day... 10 August
 
achard (1)
 Biography: Andreas Sigismund Marggraf
 
aches (1)
 Compounds: Magnesium
 
achieve (2)
 Biography: Jöns Jacob Berzelius
 Glossary: Thermal Conductivity
 
achieved (16)
 Biography: Dmitriy Ivanovich Mendeleyev
 Biography: Julius Caesar Scaliger
 Compounds: Aluminium
 Compounds: Tin
 Data1: Germanium
 Data1: Lithium
 Data1: Praseodymium
 Data1: Roentgenium
 Data1: Tellurium
 Data1: Ununbium
 Data1: Ununpentium
 Data1: Ununtrium
 Glossary: Temperature
 Production: Copper
 Production: Gallium
 Production: Gold
 
achievements (1)
 On This Day... 14 February
 
achieving (4)
 Document: The Alkali (Group 1) Metals
 Document: The Alkaline Earth Metals (Group 2)
 Glossary: Alkali Metal
 Glossary: Alkali Metal (alkaline-earth metals)
 
acic (1)
 Reactions: Titanium
 
acid (157)
 Allotrope: Arsenic
 Allotrope: Phosphorus
 Biography: Antoine-Jerome Balard
 Biography: Bernard Courtois
 Biography: Ferdinand Frederic Henri Moissan
 Biography: George Charles de Hevesy
 Biography: Ida Eva Tacke Noddack
 Biography: Jean Charles Galissard de Marignac
 Biography: Joseph Louis Gay-Lussac
 Biography: Louis Jacques Thenard
 Biography: Louis Nicolas Vauquelin
 Biography: Robert Wilhelm Bunsen
 Biography: Sir William Ramsay
 Biography: William Gregor
 Biography: William Hyde Wollaston
 Compounds: Arsenic
 Compounds: Boron
 Compounds: Calcium
 Compounds: Chlorine
 Compounds: Copper
 Compounds: Fluorine
 Compounds: Iodine
 Compounds: Magnesium
 Compounds: Nitrogen
 Compounds: Phosphorus
 Compounds: Plutonium
 Compounds: Potassium
 Compounds: Sodium
 Compounds: Sulfur
 Compounds: Tin
 Compounds: Vanadium
 Data1: Barium
 Data1: Boron
 Data1: Chlorine
 Data1: Chromium
 Data1: Fluorine
 Data1: Helium
 Data1: Hydrogen
 Data1: Iodine
 Data1: Iridium
 Data1: Lanthanum
 Data1: Lead
 Data1: Manganese
 Data1: Neodymium
 Data1: Oxygen
 Data1: Polonium
 Data1: Rhenium
 Data1: Rhodium
 Data1: Scandium
 Data1: Sulfur
 Data1: Tantalum
 Data1: Tellurium
 Data1: Thallium
 Data1: Tin
 Data1: Tungsten
 Data1: Uranium
 Data1: Vanadium
 Data2: Cadmium
 Data2: Fluorine
 Data2: Silver
 Data2: Uranium
 Document: The Actinoid Series
 Document: The Halogens (Group 17)
 Document: The Lanthanoid Series
 Equation: Acid dissociation constant
 Equation: Base ionisation constant
 Glossary: Acid
 Glossary: Amphoteric
 Glossary: Aqua regia
 Glossary: Base
 Isotope: Boron
 On This Day... 10 August
 On This Day... 13 July
 On This Day... 16 September
 On This Day... 19 August
 On This Day... 19 March
 On This Day... 2 April
 On This Day... 21 March
 On This Day... 22 February
 On This Day... 22 July
 On This Day... 25 August
 On This Day... 25 July
 On This Day... 27 January
 On This Day... 27 October
 On This Day... 4 September
 On This Day... 5 April
 On This Day... 6 April
 On This Day... 7 February
 On This Day... 8 June
 Production: Boron
 Production: Cadmium
 Production: Erbium
 Production: Fluorine
 Production: Iodine
 Production: Magnesium
 Production: Nitrogen
 Production: Phosphorus
 Production: Selenium
 Production: Thallium
 Production: Thorium
 Production: Uranium
 Production: Zinc
 Reactions: Aluminium
 Reactions: Antimony
 Reactions: Beryllium
 Reactions: Bismuth
 Reactions: Boron
 Reactions: Cadmium
 Reactions: Caesium
 Reactions: Calcium
 Reactions: Carbon
 Reactions: Cerium
 Reactions: Chromium
 Reactions: Cobalt
 Reactions: Copper
 Reactions: Dysprosium
 Reactions: Erbium
 Reactions: Europium
 Reactions: Gadolinium
 Reactions: Gold
 Reactions: Hafnium
 Reactions: Holmium
 Reactions: Iodine
 Reactions: Iridium
 Reactions: Iron
 Reactions: Lanthanum
 Reactions: Lead
 Reactions: Lithium
 Reactions: Lutetium
 Reactions: Magnesium
 Reactions: Manganese
 Reactions: Mercury
 Reactions: Neodymium
 Reactions: Nickel
 Reactions: Niobium
 Reactions: Polonium
 Reactions: Potassium
 Reactions: Praseodymium
 Reactions: Promethium
 Reactions: Rhenium
 Reactions: Rubidium
 Reactions: Samarium
 Reactions: Scandium
 Reactions: Silicon
 Reactions: Silver
 Reactions: Sodium
 Reactions: Strontium
 Reactions: Tantalum
 Reactions: Technetium
 Reactions: Terbium
 Reactions: Thallium
 Reactions: Thulium
 Reactions: Titanium
 Reactions: Ytterbium
 Reactions: Yttrium
 Reactions: Zinc
 Reactions: Zirconium
 
acidic (8)
 Compounds: Calcium
 Compounds: Plutonium
 Compounds: Potassium
 Compounds: Sodium
 Compounds: Sulfur
 Data1: Tantalum
 Glossary: pH
 Glossary: Refractory
 
acidified (2)
 Compounds: Potassium
 Production: Iodine
 
acidity (3)
 Compounds: Calcium
 Glossary: pH
 On This Day... 14 January
 
acidizing (1)
 Compounds: Chlorine
 
acids (121)
 Allotrope: Arsenic
 Allotrope: Carbon
 Biography: Andreas Sigismund Marggraf
 Biography: Jöns Jacob Berzelius
 Biography: Joseph Louis Gay-Lussac
 Biography: Karl Wilhelm Scheele
 Biography: Philip Hauge Abelson
 Compounds: Nitrogen
 Compounds: Zirconium
 Data1: Antimony
 Data1: Bromine
 Data1: Helium
 Data1: Hydrogen
 Data1: Iridium
 Data1: Lithium
 Data1: Oxygen
 Data1: Phosphorus
 Data1: Polonium
 Data1: Rhodium
 Data1: Ruthenium
 Data1: Tantalum
 Data1: Tin
 Data1: Titanium
 Data2: Aluminium
 Data2: Antimony
 Data2: Beryllium
 Data2: Calcium
 Data2: Germanium
 Data2: Lead
 Data2: Lithium
 Data2: Nickel
 Data2: Selenium
 Data2: Tin
 Document: The Halogens (Group 17)
 Equation: Acid dissociation constant
 Equation: Base ionisation constant
 Glossary: Acid
 Glossary: Base
 Glossary: Metals
 On This Day... 12 February
 On This Day... 16 February
 On This Day... 2 February
 On This Day... 21 March
 On This Day... 27 December
 On This Day... 28 January
 On This Day... 6 February
 On This Day... 8 June
 On This Day... 9 January
 Production: Hydrogen
 Production: Nitrogen
 Reactions: Aluminium
 Reactions: Antimony
 Reactions: Argon
 Reactions: Beryllium
 Reactions: Bismuth
 Reactions: Boron
 Reactions: Cadmium
 Reactions: Caesium
 Reactions: Calcium
 Reactions: Carbon
 Reactions: Cerium
 Reactions: Chromium
 Reactions: Cobalt
 Reactions: Copper
 Reactions: Dysprosium
 Reactions: Erbium
 Reactions: Europium
 Reactions: Fluorine
 Reactions: Gadolinium
 Reactions: Gold
 Reactions: Hafnium
 Reactions: Holmium
 Reactions: Hydrogen
 Reactions: Iodine
 Reactions: Iridium
 Reactions: Iron
 Reactions: Krypton
 Reactions: Lanthanum
 Reactions: Lead
 Reactions: Lithium
 Reactions: Lutetium
 Reactions: Magnesium
 Reactions: Manganese
 Reactions: Mercury
 Reactions: Neodymium
 Reactions: Neon
 Reactions: Nickel
 Reactions: Niobium
 Reactions: Nitrogen
 Reactions: Oxygen
 Reactions: Phosphorus
 Reactions: Polonium
 Reactions: Potassium
 Reactions: Praseodymium
 Reactions: Promethium
 Reactions: Radon
 Reactions: Rhenium
 Reactions: Rhodium
 Reactions: Rubidium
 Reactions: Samarium
 Reactions: Scandium
 Reactions: Selenium
 Reactions: Silicon
 Reactions: Silver
 Reactions: Sodium
 Reactions: Strontium
 Reactions: Sulfur
 Reactions: Tantalum
 Reactions: Technetium
 Reactions: Tellurium
 Reactions: Terbium
 Reactions: Thallium
 Reactions: Thulium
 Reactions: Titanium
 Reactions: Tungsten
 Reactions: Uranium
 Reactions: Xenon
 Reactions: Ytterbium
 Reactions: Yttrium
 Reactions: Zinc
 Reactions: Zirconium
 
acii (1)
 Spectrum: Actinium
 
acknowledged (1)
 Data1: Iodine
 
acne (1)
 Compounds: Copper
 
aco (1)
 Data2: Actinium
 
acoustic (4)
 Compounds: Dysprosium
 Compounds: Lithium
 Compounds: Tantalum
 Compounds: Terbium
 
acoustics (1)
 Biography: John William Strutt Rayleigh
 
acquainted (1)
 Biography: Julius Caesar Scaliger
 
acquired (3)
 Country: Czech Republic
 Data1: Samarium
 Production: Radium
 
acquitted (1)
 Biography: Julius Caesar Scaliger
 
acs (1)
 On This Day... 23 March
 
act (10)
 Biography: Joseph Priestley
 Compounds: Boron
 Data1: Chromium
 Data1: Tantalum
 Data1: Tungsten
 Data1: Zinc
 Glossary: Amphoteric
 Glossary: Enzyme
 Glossary: X-Rays
 Isotope: Ytterbium
 
acting (3)
 Biography: Robert Wilhelm Bunsen
 Compounds: Sodium
 Data1: Plutonium
 
actinide (1)
 Glossary: Actinides
 
actinides (2)
 Glossary: Actinides
 Glossary: Lanthanides (old name)
 
actinio (1)
 Names: Actinium
 
actinium (18)
 Atomic data: Actinium
 Biography: Andre Louis Debierne
 Biography: Marguerite Catherine Perey
 Compounds: Actinium
 Data1: Actinium
 Data1: Francium
 Data1: Protactinium
 Data2: Actinium
 Document: The Actinoid Series
 Glossary: Actinides
 Glossary: Actinoids
 Isotope: Actinium
 MAC data: Actinium
 Names: Actinium
 Production: Actinium
 Production: Francium
 Reactions: Actinium
 Spectrum: Actinium
 
actinoid (17)
 Data1: Actinium
 Data1: Americium
 Data1: Berkelium
 Data1: Californium
 Data1: Curium
 Data1: Einsteinium
 Data1: Fermium
 Data1: Mendelevium
 Data1: Neptunium
 Data1: Nobelium
 Data1: Plutonium
 Data1: Protactinium
 Data1: Thorium
 Data1: Uranium
 Document: The Actinoid Series
 Glossary: Actinides
 Glossary: Transition Metals
 
actinoids (14)
 Compounds: Plutonium
 Data1: Berkelium
 Data1: Lawrencium
 Data1: Neptunium
 Data1: Seaborgium
 Document: The Actinoid Series
 Glossary: Actinides
 Glossary: Actinoids
 Glossary: Inner Transition Metals
 Glossary: Lanthanoids
 Glossary: Metals
 Glossary: Transactinides
 Glossary: Transition Metals
 Production: Technetium
 
actinometer (1)
 On This Day... 7 January
 
action (16)
 Allotrope: Oxygen
 Biography: Joseph Louis Gay-Lussac
 Biography: Robert Wilhelm Bunsen
 Compounds: Bismuth
 Compounds: Copper
 Compounds: Sodium
 Compounds: Sulfur
 Data1: Germanium
 Data1: Tantalum
 Data1: Tellurium
 Document: The Halogens (Group 17)
 On This Day... 15 December
 On This Day... 28 January
 On This Day... 7 January
 Production: Radon
 Production: Sulfur
 
activated (8)
 Compounds: Chlorine
 Compounds: Phosphorus
 Compounds: Strontium
 Data1: Indium
 Data1: Iron
 Data1: Zinc
 Data1: Zirconium
 Production: Helium
 
activation (6)
 Data1: Californium
 Isotope: Calcium
 Isotope: Thallium
 On This Day... 27 January
 Production: Plutonium
 Production: Technetium
 
activator (3)
 Compounds: Sodium
 Country: United Kingdom
 Production: Europium
 
active (13)
 Compounds: Aluminium
 Compounds: Bismuth
 Compounds: Boron
 Compounds: Yttrium
 Country: Outer space
 Data1: Iodine
 Data1: Zinc
 Data2: Iodine
 Document: The Halogens (Group 17)
 Glossary: Halogens
 Isotope: Strontium
 On This Day... 4 September
 Production: Technetium
 
activiation (1)
 Production: Technetium
 
activities (3)
 Biography: Peter Armbruster
 Data1: Nitrogen
 Production: Cobalt
 
activity (26)
 Biography: Hans Christian Oersted
 Biography: Pierre Curie
 Compounds: Carbon
 Compounds: Praseodymium
 Country: Outer space
 Data1: Francium
 Data1: Ruthenium
 Data1: Sodium
 Data1: Technetium
 Equation: Reaction quotient
 Glossary: Inert
 Glossary: pH
 Glossary: Spontaneous Fission
 Isotope: Argon
 Isotope: Beryllium
 Isotope: Cobalt
 Isotope: Radium
 On This Day... 27 December
 On This Day... 4 September
 Production: Aluminium
 Production: Krypton
 Production: Lead
 Production: Rhodium
 Production: Ruthenium
 Production: Technetium
 Production: Uranium
 
acts (13)
 Compounds: Bismuth
 Compounds: Cadmium
 Compounds: Nitrogen
 Compounds: Potassium
 Compounds: Sodium
 Compounds: Strontium
 Data1: Barium
 Data1: Beryllium
 Data1: Boron
 Data1: Neodymium
 Data1: Tin
 Isotope: Strontium
 Isotope: Xenon
 
actual (7)
 Allotrope: Oxygen
 Biography: Julius Caesar Scaliger
 Biography: Robert Wilhelm Bunsen
 Data1: Antimony
 Glossary: X-Rays
 Production: Technetium
 Production: Uranium
 
actually (16)
 Biography: Hans Christian Oersted
 Biography: Walter Noddack
 Compounds: Chlorine
 Compounds: Sodium
 Compounds: Zirconium
 Country: Outer space
 Data1: Copper
 Data1: Curium
 Data1: Iodine
 Data1: Neon
 Data1: Thulium
 Data1: Tin
 Production: Iodine
 Production: Neon
 Reactions: Arsenic
 Reactions: Phosphorus
 
actuators (2)
 Compounds: Dysprosium
 Compounds: Terbium
 
acute (5)
 Biography: Julius Caesar Scaliger
 Data1: Holmium
 Data1: Molybdenum
 Data1: Thulium
 Isotope: Sodium
 
ad (125)
 Atomic data: Actinium
 Atomic data: Aluminium
 Atomic data: Americium
 Atomic data: Antimony
 Atomic data: Argon
 Atomic data: Arsenic
 Atomic data: Astatine
 Atomic data: Barium
 Atomic data: Berkelium
 Atomic data: Beryllium
 Atomic data: Bismuth
 Atomic data: Bohrium
 Atomic data: Boron
 Atomic data: Bromine
 Atomic data: Cadmium
 Atomic data: Caesium
 Atomic data: Calcium
 Atomic data: Californium
 Atomic data: Carbon
 Atomic data: Cerium
 Atomic data: Chlorine
 Atomic data: Chromium
 Atomic data: Cobalt
 Atomic data: Copper
 Atomic data: Curium
 Atomic data: Darmstadtium
 Atomic data: Dubnium
 Atomic data: Dysprosium
 Atomic data: Einsteinium
 Atomic data: Erbium
 Atomic data: Europium
 Atomic data: Fermium
 Atomic data: Fluorine
 Atomic data: Francium
 Atomic data: Gadolinium
 Atomic data: Gallium
 Atomic data: Germanium
 Atomic data: Gold
 Atomic data: Hafnium
 Atomic data: Hassium
 Atomic data: Helium
 Atomic data: Holmium
 Atomic data: Hydrogen
 Atomic data: Indium
 Atomic data: Iodine
 Atomic data: Iridium
 Atomic data: Iron
 Atomic data: Krypton
 Atomic data: Lanthanum
 Atomic data: Lawrencium
 Atomic data: Lead
 Atomic data: Lithium
 Atomic data: Lutetium
 Atomic data: Magnesium
 Atomic data: Manganese
 Atomic data: Meitnerium
 Atomic data: Mendelevium
 Atomic data: Mercury
 Atomic data: Molybdenum
 Atomic data: Neodymium
 Atomic data: Neon
 Atomic data: Neptunium
 Atomic data: Nickel
 Atomic data: Niobium
 Atomic data: Nitrogen
 Atomic data: Nobelium
 Atomic data: Osmium
 Atomic data: Oxygen
 Atomic data: Palladium
 Atomic data: Phosphorus
 Atomic data: Platinum
 Atomic data: Plutonium
 Atomic data: Polonium
 Atomic data: Potassium
 Atomic data: Praseodymium
 Atomic data: Promethium
 Atomic data: Protactinium
 Atomic data: Radium
 Atomic data: Radon
 Atomic data: Rhenium
 Atomic data: Rhodium
 Atomic data: Roentgenium
 Atomic data: Rubidium
 Atomic data: Ruthenium
 Atomic data: Rutherfordium
 Atomic data: Samarium
 Atomic data: Scandium
 Atomic data: Seaborgium
 Atomic data: Selenium
 Atomic data: Silicon
 Atomic data: Silver
 Atomic data: Sodium
 Atomic data: Strontium
 Atomic data: Sulfur
 Atomic data: Tantalum
 Atomic data: Technetium
 Atomic data: Tellurium
 Atomic data: Terbium
 Atomic data: Thallium
 Atomic data: Thorium
 Atomic data: Thulium
 Atomic data: Tin
 Atomic data: Titanium
 Atomic data: Tungsten
 Atomic data: Ununbium
 Atomic data: Ununhexium
 Atomic data: Ununoctium
 Atomic data: Ununpentium
 Atomic data: Ununquadium
 Atomic data: Ununseptium
 Atomic data: Ununtrium
 Atomic data: Uranium
 Atomic data: Vanadium
 Atomic data: Xenon
 Atomic data: Ytterbium
 Atomic data: Yttrium
 Atomic data: Zinc
 Atomic data: Zirconium
 Country: India
 Data1: Boron
 Data1: Cobalt
 Data1: Copper
 Data1: Iron
 Data1: Sulfur
 Data1: Zinc
 
ad79 (1)
 Data1: Uranium
 
adair (2)
 Biography: Adair Crawford
 Data1: Strontium
 
adams (1)
 On This Day... 3 August
 
adamson (1)
 On This Day... 15 August
 
adaptations (1)
 Document: The Halogens (Group 17)
 
adapted (2)
 Data1: Lanthanum
 Data1: Phosphorus
 
add (7)
 Data1: Manganese
 Data1: Selenium
 Data1: Uranium
 Glossary: Centigrade (celsius)
 Glossary: Enthalpy Change of Fusion (Heat of Fusion)
 Glossary: Fahrenheit
 Glossary: Magnetic Ordering
 
added (23)
 Biography: Bernard Courtois
 Compounds: Selenium
 Compounds: Sodium
 Compounds: Thorium
 Compounds: Tin
 Data1: Erbium
 Data1: Iodine
 Data1: Krypton
 Data1: Lanthanum
 Data1: Lutetium
 Data1: Niobium
 Data1: Palladium
 Data1: Rhenium
 Data1: Scandium
 Data1: Tellurium
 Data1: Thorium
 Glossary: Enthalpy Change of Fusion (Heat of Fusion)
 Glossary: Heat Capacity
 Glossary: Inert
 Isotope: Boron
 Production: Aluminium
 Production: Iodine
 Production: Magnesium
 
adding (9)
 Compounds: Cadmium
 Compounds: Potassium
 Data1: Copper
 Data1: Iodine
 Data1: Lead
 Data1: Manganese
 Data1: Rhodium
 Production: Rhodium
 Reactions: Uranium
 
addition (25)
 Allotrope: Tin
 Biography: John Dalton
 Biography: Robert Wilhelm Bunsen
 Biography: Sir Humphry Davy
 Compounds: Boron
 Compounds: Chlorine
 Compounds: Magnesium
 Compounds: Potassium
 Compounds: Silver
 Compounds: Sodium
 Country: South Africa
 Data1: Bromine
 Data1: Copper
 Data1: Helium
 Data1: Lanthanum
 Data1: Phosphorus
 Data1: Rhenium
 Data1: Ruthenium
 Document: The Lanthanoid Series
 Document: The Transition Metals (Groups 3 to 12)
 Glossary: Element
 Isotope: Uranium
 Production: Arsenic
 Production: Technetium
 Production: Thallium
 
additional (11)
 Biography: William Gregor
 Compounds: Nitrogen
 Compounds: Sodium
 Country: United States of America
 Data1: Polonium
 Data1: Thulium
 Data1: Tin
 Glossary: Alkali Metal
 Production: Lead
 Production: Uranium
 Reactions: Uranium
 
additions (1)
 On This Day... 28 December
 
additive (15)
 Compounds: Calcium
 Compounds: Chromium
 Compounds: Cobalt
 Compounds: Magnesium
 Compounds: Manganese
 Compounds: Molybdenum
 Compounds: Silicon
 Compounds: Sodium
 Compounds: Tantalum
 Compounds: Tin
 Compounds: Vanadium
 Data1: Magnesium
 Data1: Radium
 Data1: Selenium
 Data1: Sulfur
 
additives (2)
 Compounds: Chlorine
 Compounds: Phosphorus
 
adducts (1)
 Compounds: Palladium
 
adenosine (1)
 Data1: Phosphorus
 
adhere (2)
 Compounds: Aluminium
 Compounds: Silicon
 
adhesion (2)
 Compounds: Oxygen
 On This Day... 24 June
 
adhesives (4)
 Compounds: Antimony
 Compounds: Silicon
 Compounds: Sodium
 Data1: Boron
 
adiabatic (118)
 Data2: Actinium
 Data2: Aluminium
 Data2: Americium
 Data2: Antimony
 Data2: Argon
 Data2: Arsenic
 Data2: Astatine
 Data2: Barium
 Data2: Berkelium
 Data2: Beryllium
 Data2: Bismuth
 Data2: Bohrium
 Data2: Boron
 Data2: Bromine
 Data2: Cadmium
 Data2: Caesium
 Data2: Calcium
 Data2: Californium
 Data2: Carbon
 Data2: Cerium
 Data2: Chlorine
 Data2: Chromium
 Data2: Cobalt
 Data2: Copper
 Data2: Curium
 Data2: Darmstadtium
 Data2: Dubnium
 Data2: Dysprosium
 Data2: Einsteinium
 Data2: Erbium
 Data2: Europium
 Data2: Fermium
 Data2: Fluorine
 Data2: Francium
 Data2: Gadolinium
 Data2: Gallium
 Data2: Germanium
 Data2: Gold
 Data2: Hafnium
 Data2: Hassium
 Data2: Helium
 Data2: Holmium
 Data2: Hydrogen
 Data2: Indium
 Data2: Iodine
 Data2: Iridium
 Data2: Iron
 Data2: Krypton
 Data2: Lanthanum
 Data2: Lawrencium
 Data2: Lead
 Data2: Lithium
 Data2: Lutetium
 Data2: Magnesium
 Data2: Manganese
 Data2: Meitnerium
 Data2: Mendelevium
 Data2: Mercury
 Data2: Molybdenum
 Data2: Neodymium
 Data2: Neon
 Data2: Neptunium
 Data2: Nickel
 Data2: Niobium
 Data2: Nitrogen
 Data2: Nobelium
 Data2: Osmium
 Data2: Oxygen
 Data2: Palladium
 Data2: Phosphorus
 Data2: Platinum
 Data2: Plutonium
 Data2: Polonium
 Data2: Potassium
 Data2: Praseodymium
 Data2: Promethium
 Data2: Protactinium
 Data2: Radium
 Data2: Radon
 Data2: Rhenium
 Data2: Rhodium
 Data2: Roentgenium
 Data2: Rubidium
 Data2: Ruthenium
 Data2: Rutherfordium
 Data2: Samarium
 Data2: Scandium
 Data2: Seaborgium
 Data2: Selenium
 Data2: Silicon
 Data2: Silver
 Data2: Sodium
 Data2: Strontium
 Data2: Sulfur
 Data2: Tantalum
 Data2: Technetium
 Data2: Tellurium
 Data2: Terbium
 Data2: Thallium
 Data2: Thorium
 Data2: Thulium
 Data2: Tin
 Data2: Titanium
 Data2: Tungsten
 Data2: Ununbium
 Data2: Ununhexium
 Data2: Ununoctium
 Data2: Ununpentium
 Data2: Ununquadium
 Data2: Ununseptium
 Data2: Ununtrium
 Data2: Uranium
 Data2: Vanadium
 Data2: Xenon
 Data2: Ytterbium
 Data2: Yttrium
 Data2: Zinc
 Data2: Zirconium
 
adiabatically (1)
 Glossary: Temperature
 
adjacent (4)
 Biography: Ida Eva Tacke Noddack
 Country: United Kingdom
 Data1: Lanthanum
 Production: Europium
 
adjustable (1)
 Biography: William Hyde Wollaston
 
adler (1)
 On This Day... 10 July
 
administered (1)
 Glossary: Gamma Ray
 
administrative (1)
 Biography: Antoine-Laurent de Lavoisier
 
administrator (1)
 Biography: Antoine-Laurent de Lavoisier
 
admire (1)
 Biography: Jöns Jacob Berzelius
 
admission (1)
 Biography: Louis Jacques Thenard
 
admitted (4)
 Biography: Dmitriy Ivanovich Mendeleyev
 Biography: Irene Joliot-Curie
 Biography: Pierre Curie
 On This Day... 19 April
 
adn (1)
 On This Day... 25 June
 
adnrs (1)
 Allotrope: Carbon
 
adolf (1)
 On This Day... 31 October
 
adolph (1)
 On This Day... 20 January
 
adolphe (1)
 On This Day... 26 November
 
adopted (11)
 Biography: Joseph Priestley
 Data1: Bohrium
 Data1: Dubnium
 Data1: Francium
 Data1: Hassium
 Data1: Meitnerium
 Data1: Niobium
 Data1: Rutherfordium
 Data1: Seaborgium
 Glossary: Group
 Isotope: Carbon
 
adoption (2)
 Biography: Jöns Jacob Berzelius
 Data1: Phosphorus
 
adsorbed (1)
 Allotrope: Carbon
 
adsorption (9)
 Country: China
 Data1: Lanthanum
 On This Day... 21 June
 Production: Dysprosium
 Production: Erbium
 Production: Holmium
 Production: Terbium
 Production: Thulium
 Production: Yttrium
 
adult (1)
 Document: Chemical makeup of the human body
 
adulteration (1)
 Data1: Arsenic
 
adundance (1)
 Document: Abundance of the Elements in the Solar System
 
advance (1)
 Biography: Louis Jacques Thenard
 
advanced (1)
 Data1: Niobium
 
advancement (1)
 Biography: Antoine-Laurent de Lavoisier
 
advances (1)
 Biography: Robert Wilhelm Bunsen
 
advantage (8)
 Biography: (Gabriel) Daniel Fahrenheit
 Biography: Robert Wilhelm Bunsen
 Compounds: Magnesium
 Compounds: Titanium
 Country: Australia
 Data1: Bismuth
 Isotope: Strontium
 Production: Aluminium
 
advantageous (1)
 Compounds: Lithium
 
advantages (1)
 Biography: Pierre Jules César Janssen
 
advent (3)
 Data1: Arsenic
 Data1: Samarium
 Data1: Terbium
 
adventure (1)
 Biography: Julius Caesar Scaliger
 
adventurer (1)
 Biography: Julius Caesar Scaliger
 
adventures (1)
 Biography: Julius Caesar Scaliger
 
adverse (2)
 Compounds: Potassium
 Data1: Radium
 
advertised (2)
 Compounds: Boron
 Compounds: Sodium
 
advisory (1)
 Biography: Enrico Fermi
 
advocacy (1)
 Biography: Jöns Jacob Berzelius
 
advocate (1)
 Biography: Frederick Soddy
 
advocated (2)
 Biography: Joseph Priestley
 On This Day... 7 May
 
advocating (2)
 Data1: Uranium
 Production: Uranium
 
aeg (2)
 Data1: Osmium
 Data1: Tungsten
 
aerobic (1)
 Data1: Oxygen
 
aerodynamic (1)
 Compounds: Hafnium
 
aerogel (2)
 Allotrope: Carbon
 Glossary: Thermal Conductivity
 
aerogels (1)
 Allotrope: Carbon
 
aerolites (2)
 Country: Outer space
 Production: Silicon
 
aerospace (2)
 Compounds: Lithium
 Data1: Scandium
 
aes (1)
 Data1: Copper
 
aethogen (1)
 On This Day... 12 December
 
affect (4)
 Biography: Michael Faraday
 Data1: Barium
 Data1: Bromine
 Data1: Calcium
 
affected (6)
 Allotrope: Arsenic
 Allotrope: Tin
 Biography: Joseph Louis Gay-Lussac
 Data1: Dysprosium
 Glossary: Radioactivity
 Production: Phosphorus
 
affecting (4)
 Compounds: Iodine
 Country: Democratic Republic of Congo
 Production: Gold
 Production: Technetium
 
affects (1)
 Data1: Lead
 
affinities (2)
 Compounds: Plutonium
 On This Day... 13 February
 
affinity (6)
 Biography: Joseph Louis Gay-Lussac
 Data1: Cobalt
 Data1: Francium
 Data1: Samarium
 Glossary: Deliquescent
 Glossary: Hygroscopic
 
affirm (1)
 Biography: Julius Caesar Scaliger
 
affirms (1)
 Biography: Julius Caesar Scaliger
 
afflicted (1)
 Compounds: Sodium
 
afforded (1)
 Glossary: Beta Particle
 
afghanistan (1)
 Country: Afghanistan
 
afield (1)
 Data1: Antimony
 
afnio (1)
 Names: Hafnium
 
aforementioned (1)
 Data1: Uranium
 
africa (28)
 Country: Canada
 Country: South Africa
 Country: Ukraine
 Data1: Carbon
 Data1: Chromium
 Data1: Copper
 Data1: Gold
 Data1: Iron
 Data1: Manganese
 Data1: Nickel
 Data1: Palladium
 Data1: Platinum
 Data1: Rhodium
 Data1: Silicon
 Production: Aluminium
 Production: Antimony
 Production: Carbon
 Production: Chromium
 Production: Gold
 Production: Lanthanum
 Production: Manganese
 Production: Palladium
 Production: Phosphorus
 Production: Platinum
 Production: Rhodium
 Production: Ruthenium
 Production: Titanium
 Production: Zirconium
 
african (2)
 Country: Burkina Faso
 Data1: Gallium
 
afrikaner (1)
 Production: Gold
 
afterglow (1)
 Compounds: Cadmium
 
afterward (4)
 Biography: Joseph W. Kennedy
 Biography: Lise Meitner
 Biography: Louis Nicolas Vauquelin
 Data1: Radium
 
afterwards (4)
 Biography: Ida Eva Tacke Noddack
 Biography: Michael Faraday
 Compounds: Magnesium
 Data1: Indium
 
ag (7)
 Atomic data: Silver
 Data1: Silver
 Isotope: Cadmium
 Isotope: Palladium
 Isotope: Silver
 Reactions: Silver
 Spectrum: Silver
 
ag+ (2)
 Atomic data: Silver
 Reactions: Silver
 
ag+1 (1)
 Data2: Silver
 
ag+2 (1)
 Data2: Silver
 
ag+3 (1)
 Data2: Silver
 
ag0 (1)
 Data2: Silver
 
ag2+ (1)
 Reactions: Silver
 
ag2cro4 (1)
 Reactions: Silver
 
ag2o (1)
 Reactions: Silver
 
ag2s (2)
 Production: Silver
 Reactions: Silver
 
ag3ass3 (1)
 Data1: Silver
 
ag3sbs3 (1)
 Data1: Silver
 
ag8ges6 (1)
 Data1: Germanium
 
again (9)
 Biography: Jöns Jacob Berzelius
 Biography: Robert Wilhelm Bunsen
 Data1: Francium
 Data1: Lead
 Data1: Polonium
 Glossary: Enthalpy Change of Fusion (Heat of Fusion)
 Glossary: Fahrenheit
 Production: Iodine
 Production: Plutonium
 
against (15)
 Biography: Joseph Priestley
 Biography: Julius Caesar Scaliger
 Biography: Lise Meitner
 Biography: Robert Wilhelm Bunsen
 Compounds: Chlorine
 Compounds: Phosphorus
 Country: United States of America
 Data1: Boron
 Data1: Germanium
 Data1: Lead
 Data1: Manganese
 Data1: Technetium
 Glossary: Doubly Magic
 Glossary: Magic Number
 Glossary: Moh's Scale of Hardness
 
agate (1)
 Production: Silicon
 
agbr (1)
 Reactions: Silver
 
agcl (3)
 Compounds: Silver
 Production: Silver
 Reactions: Silver
 
agcn (1)
 Compounds: Silver
 
age (25)
 Biography: Antoine-Laurent de Lavoisier
 Biography: Dmitriy Ivanovich Mendeleyev
 Biography: Irene Joliot-Curie
 Biography: Jöns Jacob Berzelius
 Biography: Joseph Louis Gay-Lussac
 Biography: Julius Caesar Scaliger
 Biography: Louis Jacques Thenard
 Biography: Michael Faraday
 Biography: Robert Wilhelm Bunsen
 Compounds: Oxygen
 Data1: Arsenic
 Data1: Bismuth
 Data1: Copper
 Data1: Indium
 Data1: Lead
 Data1: Plutonium
 Data1: Rubidium
 Isotope: Beryllium
 Isotope: Bismuth
 Isotope: Lutetium
 Isotope: Nickel
 On This Day... 30 October
 On This Day... 31 August
 On This Day... 4 March
 Production: Thorium
 
aged (1)
 Compounds: Calcium
 
agen (1)
 Biography: Julius Caesar Scaliger
 
agency (3)
 Biography: Sir Humphry Davy
 Production: Radon
 Production: Uranium
 
agent (34)
 Allotrope: Oxygen
 Biography: Robert Wilhelm Bunsen
 Compounds: Aluminium
 Compounds: Antimony
 Compounds: Arsenic
 Compounds: Boron
 Compounds: Calcium
 Compounds: Chlorine
 Compounds: Copper
 Compounds: Gold
 Compounds: Lithium
 Compounds: Magnesium
 Compounds: Phosphorus
 Compounds: Potassium
 Compounds: Selenium
 Compounds: Silicon
 Compounds: Sodium
 Compounds: Sulfur
 Compounds: Technetium
 Compounds: Tin
 Compounds: Vanadium
 Compounds: Zinc
 Data1: Aluminium
 Data1: Bromine
 Data1: Calcium
 Data1: Cobalt
 Data1: Iridium
 Data1: Lead
 Data1: Platinum
 Data1: Rhodium
 Data1: Uranium
 Glossary: Carcinogen
 Isotope: Actinium
 On This Day... 25 June
 
agents (15)
 Compounds: Magnesium
 Compounds: Phosphorus
 Compounds: Silicon
 Compounds: Sodium
 Compounds: Zinc
 Data1: Copper
 Data1: Gadolinium
 Data1: Germanium
 Data1: Lithium
 Data1: Polonium
 Data1: Scandium
 Data1: Sodium
 Data1: Sulfur
 Data2: Lithium
 On This Day... 17 October
 
ages (1)
 Data1: Uranium
 
agf2 (1)
 Reactions: Silver
 
agglomeration (1)
 Compounds: Oxygen
 
aggregate (1)
 Compounds: Calcium
 
aggregated (1)
 Allotrope: Carbon
 
aggressive (2)
 Compounds: Boron
 Data1: Tantalum
 
aggressively (1)
 Glossary: Acid
 
agi (2)
 Data1: Iodine
 Reactions: Silver
 
aging (1)
 Compounds: Silicon
 
agno3 (1)
 Compounds: Silver
 
ago (3)
 Country: Outer space
 Isotope: Aluminium
 Reactions: Silver
 
ago+ (1)
 Reactions: Silver
 
agree (3)
 Biography: Dmitriy Ivanovich Mendeleyev
 Biography: Jöns Jacob Berzelius
 Biography: Julius Caesar Scaliger
 
agreeable (1)
 Biography: Julius Caesar Scaliger
 
agreed (1)
 Data1: Niobium
 
agricola (4)
 Data1: Fluorine
 Data1: Tungsten
 On This Day... 24 March
 Production: Fluorine
 
agricultural (7)
 Biography: Per Teodor Cleve
 Biography: Smithson Tennant
 Compounds: Magnesium
 Compounds: Zinc
 Data1: Arsenic
 Data1: Magnesium
 Production: Arsenic
 
agriculture (6)
 Biography: Sir Humphry Davy
 Compounds: Calcium
 Compounds: Copper
 Compounds: Magnesium
 Data1: Sodium
 Production: Iron
 
ags (1)
 Data1: Silver
 
ah (95)
 Data2: Actinium
 Data2: Aluminium
 Data2: Americium
 Data2: Antimony
 Data2: Arsenic
 Data2: Astatine
 Data2: Barium
 Data2: Berkelium
 Data2: Beryllium
 Data2: Bismuth
 Data2: Boron
 Data2: Bromine
 Data2: Cadmium
 Data2: Caesium
 Data2: Calcium
 Data2: Californium
 Data2: Cerium
 Data2: Chlorine
 Data2: Chromium
 Data2: Cobalt
 Data2: Copper
 Data2: Curium
 Data2: Dysprosium
 Data2: Einsteinium
 Data2: Erbium
 Data2: Europium
 Data2: Fermium
 Data2: Fluorine
 Data2: Francium
 Data2: Gadolinium
 Data2: Gallium
 Data2: Germanium
 Data2: Gold
 Data2: Hafnium
 Data2: Holmium
 Data2: Hydrogen
 Data2: Indium
 Data2: Iodine
 Data2: Iridium
 Data2: Iron
 Data2: Lanthanum
 Data2: Lead
 Data2: Lithium
 Data2: Lutetium
 Data2: Magnesium
 Data2: Manganese
 Data2: Mendelevium
 Data2: Mercury
 Data2: Molybdenum
 Data2: Neodymium
 Data2: Neptunium
 Data2: Nickel
 Data2: Niobium
 Data2: Nitrogen
 Data2: Nobelium
 Data2: Osmium
 Data2: Oxygen
 Data2: Palladium
 Data2: Phosphorus
 Data2: Platinum
 Data2: Plutonium
 Data2: Polonium
 Data2: Potassium
 Data2: Praseodymium
 Data2: Promethium
 Data2: Protactinium
 Data2: Radium
 Data2: Rhenium
 Data2: Rhodium
 Data2: Rubidium
 Data2: Ruthenium
 Data2: Samarium
 Data2: Scandium
 Data2: Selenium
 Data2: Silicon
 Data2: Silver
 Data2: Sodium
 Data2: Strontium
 Data2: Sulfur
 Data2: Tantalum
 Data2: Technetium
 Data2: Tellurium
 Data2: Terbium
 Data2: Thallium
 Data2: Thorium
 Data2: Thulium
 Data2: Tin
 Data2: Titanium
 Data2: Tungsten
 Data2: Uranium
 Data2: Vanadium
 Data2: Ytterbium
 Data2: Yttrium
 Data2: Zinc
 Data2: Zirconium
 
ahrens (93)
 Data2: Actinium
 Data2: Aluminium
 Data2: Americium
 Data2: Antimony
 Data2: Arsenic
 Data2: Astatine
 Data2: Barium
 Data2: Berkelium
 Data2: Beryllium
 Data2: Bismuth
 Data2: Boron
 Data2: Bromine
 Data2: Cadmium
 Data2: Caesium
 Data2: Calcium
 Data2: Californium
 Data2: Carbon
 Data2: Cerium
 Data2: Chlorine
 Data2: Chromium
 Data2: Cobalt
 Data2: Copper
 Data2: Curium
 Data2: Dysprosium
 Data2: Erbium
 Data2: Europium
 Data2: Fluorine
 Data2: Francium
 Data2: Gadolinium
 Data2: Gallium
 Data2: Germanium
 Data2: Gold
 Data2: Hafnium
 Data2: Holmium
 Data2: Hydrogen
 Data2: Indium
 Data2: Iodine
 Data2: Iron
 Data2: Lanthanum
 Data2: Lawrencium
 Data2: Lead
 Data2: Lithium
 Data2: Lutetium
 Data2: Magnesium
 Data2: Manganese
 Data2: Mercury
 Data2: Molybdenum
 Data2: Neodymium
 Data2: Neptunium
 Data2: Nickel
 Data2: Niobium
 Data2: Nitrogen
 Data2: Nobelium
 Data2: Osmium
 Data2: Oxygen
 Data2: Palladium
 Data2: Phosphorus
 Data2: Platinum
 Data2: Plutonium
 Data2: Polonium
 Data2: Potassium
 Data2: Praseodymium
 Data2: Promethium
 Data2: Protactinium
 Data2: Radium
 Data2: Rhenium
 Data2: Rhodium
 Data2: Rubidium
 Data2: Ruthenium
 Data2: Samarium
 Data2: Scandium
 Data2: Selenium
 Data2: Silicon
 Data2: Silver
 Data2: Sodium
 Data2: Sulfur
 Data2: Tantalum
 Data2: Technetium
 Data2: Tellurium
 Data2: Terbium
 Data2: Thallium
 Data2: Thorium
 Data2: Thulium
 Data2: Tin
 Data2: Titanium
 Data2: Tungsten
 Data2: Uranium
 Data2: Vanadium
 Data2: Xenon
 Data2: Ytterbium
 Data2: Yttrium
 Data2: Zinc
 Data2: Zirconium
 
ai} (1)
 Equation: Reaction quotient
 
aid (3)
 Biography: Robert Wilhelm Bunsen
 Compounds: Oxygen
 Production: Sulfur
 
aided (2)
 Biography: Joseph W. Kennedy
 Compounds: Calcium
 
aids (1)
 Compounds: Oxygen
 
aimed (1)
 Glossary: Gamma Ray
 
aims (2)
 Biography: Joseph Priestley
 Production: Gold
 
aircraft (14)
 Compounds: Molybdenum
 Compounds: Potassium
 Data1: Aluminium
 Data1: Antimony
 Data1: Beryllium
 Data1: Indium
 Data1: Lithium
 Data1: Mercury
 Data1: Molybdenum
 Data1: Palladium
 Data1: Ruthenium
 Data1: Titanium
 Data1: Uranium
 Document: The Actinoid Series
 
airline (1)
 Glossary: Spontaneous Fission
 
airplane (2)
 Data1: Rhodium
 Data1: Titanium
 
airplanes (1)
 Data1: Magnesium
 
airship (1)
 Data1: Hydrogen
 
airships (3)
 Country: United States of America
 Data1: Helium
 Data1: Hydrogen
 
aktinij (1)
 Names: Actinium
 
aktinium (1)
 Names: Actinium
 
aktinos (1)
 Data1: Actinium
 
al (24)
 Atomic data: Aluminium
 Biography: Enrico Fermi
 Compounds: Aluminium
 Country: Outer space
 Data1: Aluminium
 Data1: Caesium
 Data1: Hassium
 Data1: Lithium
 Data1: Rubidium
 Data2: Aluminium
 Isotope: Aluminium
 Isotope: Magnesium
 On This Day... 23 February
 On This Day... 24 January
 On This Day... 28 March
 On This Day... 30 April
 On This Day... 4 March
 On This Day... 5 May
 Production: Aluminium
 Production: Cerium
 Production: Hydrogen
 Production: Lithium
 Reactions: Aluminium
 Spectrum: Aluminium
 
al+ (2)
 Atomic data: Aluminium
 Reactions: Aluminium
 
al+1 (1)
 Data2: Aluminium
 
al+3 (1)
 Data2: Aluminium
 
al0 (1)
 Data2: Aluminium
 
al2 (1)
 Compounds: Aluminium
 
al2be3si6o18 (7)
 Country: Brazil
 Country: Madagascar
 Country: Mozambique
 Country: Uganda
 Country: United States of America
 Country: Zambia
 Production: Beryllium
 
al2beo4 (2)
 Data1: Beryllium
 Production: Beryllium
 
al2i6 (1)
 Reactions: Aluminium
 
al2o2 (1)
 Data1: Aluminium
 
al2o3 (3)
 Data1: Aluminium
 Production: Aluminium
 Reactions: Aluminium
 
al2si4o12 (2)
 Country: Canada
 Data1: Rubidium
 
al3+ (2)
 Production: Aluminium
 Reactions: Aluminium
 
al5lu3o12 (1)
 Compounds: Lutetium
 
alabamine (1)
 Data1: Astatine
 
alameda (1)
 Biography: Albert Ghiorso
 
alamogordo (1)
 On This Day... 16 July
 
alamos (8)
 Biography: Edwin Mattison McMillan
 Biography: Emilio Gino Segre
 Biography: Enrico Fermi
 Biography: Joseph W. Kennedy
 Compounds: Tantalum
 Data1: Einsteinium
 Data1: Fermium
 Production: Einsteinium
 
alan (1)
 On This Day... 14 April
 
alarms (1)
 Data1: Radon
 
alaska (1)
 Data1: Lead
 
alb2 (1)
 Compounds: Aluminium
 
alba (1)
 Data1: Manganese
 
albania (1)
 Country: Albania
 
albe3 (1)
 Data1: Beryllium
 
albebaranium (1)
 Data1: Lutetium
 
albert (26)
 Biography: Albert Ghiorso
 Biography: Robert Wilhelm Bunsen
 Data1: Americium
 Data1: Arsenic
 Data1: Berkelium
 Data1: Californium
 Data1: Curium
 Data1: Dubnium
 Data1: Einsteinium
 Data1: Fermium
 Data1: Lawrencium
 Data1: Mendelevium
 Data1: Nobelium
 Data1: Seaborgium
 Glossary: Decay Energy
 On This Day... 14 March
 On This Day... 15 July
 On This Day... 16 September
 On This Day... 28 July
 On This Day... 29 January
 On This Day... 30 April
 On This Day... 5 May
 On This Day... 9 April
 On This Day... 9 September
 Production: Einsteinium
 Production: Fermium
 
alberta (1)
 Production: Sulfur
 
albertus (2)
 Data1: Arsenic
 On This Day... 15 November
 
albr26 (1)
 Reactions: Aluminium
 
albrecht (2)
 Biography: Julius Caesar Scaliger
 On This Day... 16 September
 
albright (1)
 Production: Phosphorus
 
albumin (1)
 Data1: Copper
 
alchemical (2)
 Data1: Mercury
 Data1: Sulfur
 
alchemist (4)
 Data1: Oxygen
 Data1: Phosphorus
 On This Day... 13 July
 On This Day... 2 February
 
alchemists (5)
 Compounds: Barium
 Data1: Lead
 Data1: Manganese
 Data1: Mercury
 Data1: Sulfur
 
alchemy (4)
 Biography: Jöns Jacob Berzelius
 Data1: Copper
 Data1: Mercury
 On This Day... 26 June
 
alcl3 (1)
 Reactions: Aluminium
 
alcohol (8)
 Allotrope: Phosphorus
 Biography: Dmitriy Ivanovich Mendeleyev
 Compounds: Sodium
 Compounds: Zinc
 Glossary: Fahrenheit
 On This Day... 13 July
 On This Day... 27 October
 On This Day... 7 September
 
alcoholic (1)
 Compounds: Sulfur
 
alcohols (2)
 Document:
 On This Day... 1 May
 
aldebaranium (1)
 Data1: Ytterbium
 
aldehydes (2)
 Document:
 On This Day... 25 June
 
alder (2)
 On This Day... 10 July
 On This Day... 23 January
 
aleksandr (1)
 On This Day... 15 September
 
alendronate (1)
 Compounds: Phosphorus
 
alert (1)
 Biography: Bernard Courtois
 
alerted (1)
 Production: Lanthanum
 
alessandro (2)
 Biography: Adair Crawford
 On This Day... 18 February
 
alexander (11)
 Biography: Clemens Alexander Winkler
 Biography: Dmitriy Ivanovich Mendeleyev
 Data1: Polonium
 Data1: Vanadium
 On This Day... 1 May
 On This Day... 16 March
 On This Day... 20 April
 On This Day... 24 September
 On This Day... 26 December
 On This Day... 28 May
 On This Day... 4 March
 
alexandre (3)
 Biography: Antoine Alexandre Brutus Bussy
 On This Day... 19 September
 On This Day... 7 September
 
alexis (1)
 On This Day... 2 October
 
alf63 (1)
 Reactions: Aluminium
 
alfred (3)
 Data1: Nobelium
 On This Day... 21 October
 On This Day... 4 January
 
alga (1)
 Production: Hydrogen
 
algae (3)
 Compounds: Sodium
 Data1: Copper
 Production: Oxygen
 
algainp (2)
 Compounds: Aluminium
 Compounds: Indium
 
algan (1)
 Compounds: Aluminium
 
algap (1)
 Compounds: Aluminium
 
algeria (4)
 Country: Algeria
 Country: Russia
 Country: United States of America
 Production: Helium
 
alginate (1)
 Compounds: Potassium
 
alh (1)
 Allotrope: Carbon
 
alice (1)
 On This Day... 27 February
 
alicyclic (1)
 On This Day... 27 March
 
align (1)
 Glossary: Magnetic Ordering
 
aligned (1)
 Glossary: Magnetic Ordering
 
aligning (1)
 Glossary: Periodic Table
 
alignment (1)
 Glossary: Magnetic Ordering
 
alike (1)
 Biography: Jöns Jacob Berzelius
 
aliphatic (5)
 Biography: Ida Eva Tacke Noddack
 Data1: Bromine
 Glossary: Aliphatic
 On This Day... 13 August
 On This Day... 27 March
 
alkali (27)
 Allotrope: Phosphorus
 Biography: Joseph Louis Gay-Lussac
 Biography: Robert Wilhelm Bunsen
 Data1: Bromine
 Data1: Caesium
 Data1: Francium
 Data1: Lithium
 Data1: Potassium
 Data1: Rubidium
 Data1: Sodium
 Document: The Alkali (Group 1) Metals
 Document: The Alkaline Earth Metals (Group 2)
 Glossary: Alkali Metal
 Glossary: Alkali Metal (alkaline-earth metals)
 Glossary: Group
 Glossary: Metals
 On This Day... 3 October
 Production: Caesium
 Production: Lutetium
 Production: Uranium
 Reactions: Bromine
 Reactions: Chlorine
 Reactions: Gallium
 Reactions: Indium
 Reactions: Iodine
 Reactions: Niobium
 Reactions: Tantalum
 
alkaline (19)
 Compounds: Aluminium
 Compounds: Manganese
 Compounds: Sodium
 Data1: Barium
 Data1: Beryllium
 Data1: Bromine
 Data1: Calcium
 Data1: Magnesium
 Data1: Manganese
 Data1: Radium
 Data1: Strontium
 Data2: Silicon
 Document: The Alkali (Group 1) Metals
 Document: The Alkaline Earth Metals (Group 2)
 Glossary: Alkali Metal
 Glossary: Alkali Metal (alkaline-earth metals)
 On This Day... 17 November
 Production: Lutetium
 Production: Uranium
 
alkalinity (1)
 Compounds: Sodium
 
alkalis (16)
 Biography: Joseph Louis Gay-Lussac
 Data1: Polonium
 Data1: Tin
 Data2: Chromium
 Data2: Copper
 Data2: Tin
 Document: The Alkaline Earth Metals (Group 2)
 Reactions: Cadmium
 Reactions: Hafnium
 Reactions: Lead
 Reactions: Magnesium
 Reactions: Mercury
 Reactions: Titanium
 Reactions: Vanadium
 Reactions: Zinc
 Reactions: Zirconium
 
alkaloids (4)
 Biography: Joseph Louis Gay-Lussac
 Biography: Sir William Ramsay
 On This Day... 13 August
 On This Day... 22 March
 
alkane (1)
 Data1: Carbon
 
alkarsine (1)
 Biography: Robert Wilhelm Bunsen
 
alkene (1)
 Data1: Carbon
 
alkenes (4)
 Compounds: Palladium
 Data1: Bromine
 Document:
 On This Day... 28 December
 
alkyl (1)
 Compounds: Palladium
 
alkylation (2)
 Compounds: Fluorine
 Data1: Lutetium
 
alkyne (1)
 Data1: Carbon
 
allan (1)
 Allotrope: Carbon
 
allanite (1)
 Production: Cerium
 
alleged (2)
 Biography: Julius Caesar Scaliger
 Data1: Chlorine
 
allergic (2)
 Compounds: Sodium
 Data1: Aluminium
 
allgegenwartskonzentration (1)
 Biography: Walter Noddack
 
allobar (1)
 Glossary: Allobar
 
allotrope (16)
 Allotrope: Arsenic
 Allotrope: Boron
 Allotrope: Carbon
 Allotrope: Oxygen
 Allotrope: Phosphorus
 Allotrope: Plutonium
 Allotrope: Selenium
 Allotrope: Sulfur
 Allotrope: Tin
 Allotrope: Uranium
 Allotrope: Ytterbium
 Compounds: Sodium
 Data1: Phosphorus
 Glossary: Allotrope
 Glossary: Isotope
 Glossary: Metalloids
 
allotropes (100)
 Allotrope: Arsenic
 Allotrope: Boron
 Allotrope: Carbon
 Allotrope: Oxygen
 Allotrope: Phosphorus
 Allotrope: Plutonium
 Allotrope: Selenium
 Allotrope: Sulfur
 Allotrope: Tin
 Allotrope: Uranium
 Allotrope: Ytterbium
 Atomic data: Boron
 Atomic data: Phosphorus
 Atomic data: Protactinium
 Atomic data: Sulfur
 Atomic data: Uranium
 Compounds: Arsenic
 Compounds: Boron
 Compounds: Carbon
 Compounds: Oxygen
 Compounds: Phosphorus
 Compounds: Plutonium
 Compounds: Selenium
 Compounds: Sulfur
 Compounds: Tin
 Compounds: Uranium
 Compounds: Ytterbium
 Data1: Arsenic
 Data1: Boron
 Data1: Carbon
 Data1: Oxygen
 Data1: Phosphorus
 Data1: Plutonium
 Data1: Selenium
 Data1: Sulfur
 Data1: Tin
 Data1: Uranium
 Data1: Ytterbium
 Data2: Arsenic
 Data2: Boron
 Data2: Carbon
 Data2: Oxygen
 Data2: Phosphorus
 Data2: Plutonium
 Data2: Selenium
 Data2: Sulfur
 Data2: Tin
 Data2: Uranium
 Data2: Ytterbium
 Document: The Actinoid Series
 Glossary: Allotrope
 Glossary: Metalloids
 Isotope: Arsenic
 Isotope: Boron
 Isotope: Carbon
 Isotope: Oxygen
 Isotope: Phosphorus
 Isotope: Selenium
 Isotope: Sulfur
 Isotope: Tin
 Isotope: Uranium
 MAC data: Boron
 MAC data: Phosphorus
 MAC data: Protactinium
 MAC data: Sulfur
 MAC data: Uranium
 Production: Arsenic
 Production: Boron
 Production: Carbon
 Production: Oxygen
 Production: Phosphorus
 Production: Plutonium
 Production: Selenium
 Production: Strontium
 Production: Sulfur
 Production: Tin
 Production: Uranium
 Production: Ytterbium
 Reactions: Arsenic
 Reactions: Boron
 Reactions: Carbon
 Reactions: Oxygen
 Reactions: Phosphorus
 Reactions: Plutonium
 Reactions: Selenium
 Reactions: Sulfur
 Reactions: Tin
 Reactions: Uranium
 Reactions: Ytterbium
 Spectrum: Arsenic
 Spectrum: Boron
 Spectrum: Carbon
 Spectrum: Oxygen
 Spectrum: Phosphorus
 Spectrum: Plutonium
 Spectrum: Selenium
 Spectrum: Sulfur
 Spectrum: Tin
 Spectrum: Uranium
 Spectrum: Ytterbium
 
allotropic (2)
 Data1: Phosphorus
 Glossary: Allotrope
 
allow (10)
 Compounds: Arsenic
 Compounds: Gallium
 Compounds: Oxygen
 Compounds: Zinc
 Compounds: Zirconium
 Glossary: Double Electron Capture
 Glossary: Island of Stability
 Production: Rhenium
 Production: Rhodium
 Reactions: Helium
 
allowable (1)
 Data1: Chromium
 
allowances (1)
 Data1: Manganese
 
allowed (12)
 Biography: Arthur Jeffrey Dempster
 Biography: Jöns Jacob Berzelius
 Biography: Robert Wilhelm Bunsen
 Country: Outer space
 Data1: Lanthanum
 Data1: Molybdenum
 Data1: Phosphorus
 Data1: Thallium
 Glossary: Double Beta Decay
 Glossary: Double Electron Capture
 Production: Technetium
 Reactions: Helium
 
allowing (4)
 Allotrope: Plutonium
 Biography: Arthur Jeffrey Dempster
 Biography: William Hyde Wollaston
 Reactions: Carbon
 
allows (7)
 Compounds: Fluorine
 Compounds: Germanium
 Compounds: Molybdenum
 Data1: Curium
 Data1: Scandium
 Glossary: Electrical Resistivity
 Glossary: Young's Modulus
 
alloy (27)
 Compounds: Dysprosium
 Compounds: Iridium
 Compounds: Osmium
 Compounds: Terbium
 Compounds: Titanium
 Data1: Arsenic
 Data1: Bismuth
 Data1: Erbium
 Data1: Gallium
 Data1: Gold
 Data1: Indium
 Data1: Iridium
 Data1: Iron
 Data1: Lithium
 Data1: Manganese
 Data1: Niobium
 Data1: Osmium
 Data1: Ruthenium
 Data1: Tellurium
 Data1: Tin
 Data1: Zinc
 Document: The Lanthanoid Series
 Glossary: Alloy
 Glossary: Amalgam
 On This Day... 9 September
 Production: Iron
 Production: Osmium
 
alloyed (11)
 Allotrope: Plutonium
 Data1: Osmium
 Data1: Praseodymium
 Data1: Tantalum
 Data1: Tellurium
 Data1: Titanium
 Data1: Tungsten
 Data1: Zirconium
 Production: Palladium
 Production: Platinum
 Production: Zinc
 
alloying (6)
 Data1: Calcium
 Data1: Cerium
 Data1: Gold
 Data1: Magnesium
 Data1: Rhodium
 Data1: Selenium
 
alloys (51)
 Allotrope: Arsenic
 Biography: Charles Hatchett
 Compounds: Tantalum
 Data1: Aluminium
 Data1: Antimony
 Data1: Barium
 Data1: Beryllium
 Data1: Bismuth
 Data1: Boron
 Data1: Cadmium
 Data1: Calcium
 Data1: Cerium
 Data1: Chromium
 Data1: Cobalt
 Data1: Copper
 Data1: Germanium
 Data1: Gold
 Data1: Hafnium
 Data1: Indium
 Data1: Iridium
 Data1: Iron
 Data1: Lanthanum
 Data1: Lithium
 Data1: Lutetium
 Data1: Magnesium
 Data1: Manganese
 Data1: Molybdenum
 Data1: Nickel
 Data1: Niobium
 Data1: Osmium
 Data1: Palladium
 Data1: Platinum
 Data1: Rhenium
 Data1: Samarium
 Data1: Scandium
 Data1: Silver
 Data1: Terbium
 Data1: Thorium
 Data1: Tin
 Data1: Titanium
 Data1: Tungsten
 Data1: Vanadium
 Data1: Yttrium
 Data1: Zinc
 Data1: Zirconium
 Document: The Actinoid Series
 Glossary: Alloy
 Glossary: Magnetic Ordering
 Production: Bismuth
 Production: Iridium
 Production: Rhenium
 
alluminio (1)
 Names: Aluminium
 
alluvial (4)
 Country: Colombia
 Country: India
 Production: Iridium
 Production: Platinum
 
allyl (1)
 On This Day... 14 January
 
almon (1)
 Data1: Lawrencium
 
almonds (1)
 Compounds: Sodium
 
alncl (1)
 Compounds: Aluminium
 
alo2 (1)
 Reactions: Aluminium
 
alone (6)
 Biography: Gustav Robert Kirchhoff
 Compounds: Sodium
 Data1: Germanium
 Isotope: Actinium
 Production: Cobalt
 Production: Sulfur
 
along (26)
 Biography: Adair Crawford
 Biography: Dirk Coster
 Biography: Ida Eva Tacke Noddack
 Biography: Joseph W. Kennedy
 Biography: Pierre Jules César Janssen
 Biography: Sir Humphry Davy
 Compounds: Bromine
 Compounds: Carbon
 Compounds: Lithium
 Compounds: Silicon
 Compounds: Sodium
 Country: South Africa
 Data1: Bismuth
 Data1: Caesium
 Data1: Europium
 Data1: Gallium
 Data1: Iridium
 Data1: Lead
 Data1: Seaborgium
 Glossary: Thermal Conductivity
 Production: Chlorine
 Production: Platinum
 Production: Radon
 Production: Sulfur
 Production: Technetium
 Production: Uranium
 
alongside (1)
 Data1: Copper
 
alonso (1)
 Data1: Seaborgium
 
alpha (68)
 Allotrope: Arsenic
 Allotrope: Boron
 Allotrope: Selenium
 Allotrope: Tin
 Allotrope: Uranium
 Allotrope: Ytterbium
 Biography: Andre Louis Debierne
 Biography: Irene Joliot-Curie
 Compounds: Americium
 Data1: Americium
 Data1: Astatine
 Data1: Berkelium
 Data1: Bismuth
 Data1: Californium
 Data1: Curium
 Data1: Fermium
 Data1: Francium
 Data1: Helium
 Data1: Lawrencium
 Data1: Mendelevium
 Data1: Plutonium
 Data1: Polonium
 Data1: Selenium
 Data1: Sulfur
 Glossary:
 Glossary: Alpha Decay
 Glossary: Gamma Ray
 Glossary: Isometric Transition
 Isotope: Actinium
 Isotope: Americium
 Isotope: Astatine
 Isotope: Berkelium
 Isotope: Bismuth
 Isotope: Californium
 Isotope: Curium
 Isotope: Einsteinium
 Isotope: Fermium
 Isotope: Francium
 Isotope: Gadolinium
 Isotope: Hafnium
 Isotope: Helium
 Isotope: Lead
 Isotope: Mendelevium
 Isotope: Neodymium
 Isotope: Neptunium
 Isotope: Nobelium
 Isotope: Osmium
 Isotope: Platinum
 Isotope: Plutonium
 Isotope: Polonium
 Isotope: Protactinium
 Isotope: Radium
 Isotope: Radon
 Isotope: Rhenium
 Isotope: Roentgenium
 Isotope: Samarium
 Isotope: Seaborgium
 Isotope: Thorium
 Isotope: Tungsten
 Production: Astatine
 Production: Berkelium
 Production: Californium
 Production: Curium
 Production: Francium
 Production: Helium
 Production: Mendelevium
 Reactions: Manganese
 Reactions: Nickel
 
alpo4 (2)
 Data1: Lithium
 Production: Lithium
 
alps (1)
 Biography: Irene Joliot-Curie
 
already (4)
 Data1: Dubnium
 Glossary: Ionization Potential
 Isotope: Hassium
 Isotope: Hydrogen
 
alsace (1)
 Biography: Antoine-Laurent de Lavoisier
 
alsatian (1)
 On This Day... 25 March
 
alsi3 (1)
 Data1: Rubidium
 
alteration (2)
 Compounds: Copper
 Country: Australia
 
alterations (1)
 Data1: Lanthanum
 
altered (2)
 Data1: Rubidium
 On This Day... 24 July
 
altering (2)
 Data1: Lithium
 Glossary: Carcinogen
 
alternate (2)
 Biography: Sir William Crookes
 On This Day... 11 September
 
alternating (1)
 Glossary: Aromatic
 
alternative (13)
 Compounds: Nitrogen
 Compounds: Tungsten
 Compounds: Zirconium
 Data1: Gallium
 Data1: Lanthanum
 Data1: Phosphorus
 Data1: Zirconium
 Document: The Noble Gases (Group 18)
 Glossary: Noble Gasses (inert gasses)
 Glossary: Vickers Hardness
 Glossary: Young's Modulus
 Production: Aluminium
 Production: Technetium
 
alternatively (1)
 Production: Strontium
 
alternatives (2)
 Compounds: Sodium
 Data1: Lead
 
alters (1)
 Compounds: Sodium
 
although (80)
 Allotrope: Carbon
 Allotrope: Phosphorus
 Biography: Antoine-Laurent de Lavoisier
 Biography: Dmitriy Ivanovich Mendeleyev
 Biography: Hans Christian Oersted
 Biography: Henry Cavendish
 Biography: Jöns Jacob Berzelius
 Biography: Karl Wilhelm Scheele
 Biography: Marie Curie (Marya Sklodowska)
 Biography: Philip Hauge Abelson
 Biography: Robert Wilhelm Bunsen
 Biography: Sir William Crookes
 Biography: William Gregor
 Biography: William Hyde Wollaston
 Compounds: Cobalt
 Compounds: Magnesium
 Compounds: Phosphorus
 Compounds: Silicon
 Compounds: Sodium
 Country: Oceans / Seas
 Country: Outer space
 Country: United Kingdom
 Data1: Aluminium
 Data1: Boron
 Data1: Caesium
 Data1: Californium
 Data1: Dysprosium
 Data1: Gadolinium
 Data1: Gold
 Data1: Helium
 Data1: Hydrogen
 Data1: Indium
 Data1: Iodine
 Data1: Iridium
 Data1: Lutetium
 Data1: Magnesium
 Data1: Manganese
 Data1: Nickel
 Data1: Radium
 Data1: Radon
 Data1: Samarium
 Data1: Selenium
 Data1: Silver
 Data1: Sulfur
 Data1: Tin
 Data1: Titanium
 Data1: Uranium
 Data1: Ytterbium
 Data1: Yttrium
 Data1: Zirconium
 Document: The Alkali (Group 1) Metals
 Document: The Halogens (Group 17)
 Glossary: Electron Volt
 Glossary: Proton
 Glossary: Rare Earth Elements
 Glossary: Semiconductor
 Glossary: Temperature
 Glossary: Transition Metals
 Glossary: X-Rays
 Isotope: Californium
 Isotope: Helium
 Isotope: Technetium
 On This Day... 8 February
 Production: Aluminium
 Production: Arsenic
 Production: Europium
 Production: Hydrogen
 Production: Indium
 Production: Iodine
 Production: Iron
 Production: Lanthanum
 Production: Magnesium
 Production: Rhodium
 Production: Sulfur
 Production: Thallium
 Production: Tin
 Production: Uranium
 Reactions: Magnesium
 Reactions: Radon
 Reactions: Zinc
 
altitude (1)
 Glossary: Air
 
alum (1)
 Data1: Aluminium
 
alumen (1)
 Data1: Aluminium
 
alumina (7)
 Compounds: Silicon
 Country: Australia
 Data1: Aluminium
 Glossary: Refractory
 Production: Aluminium
 Production: Gallium
 Production: Technetium
 
aluminate (1)
 Compounds: Strontium
 
aluminates (1)
 Reactions: Aluminium
 
alumine (1)
 Data1: Aluminium
 
aluminij (1)
 Names: Aluminium
 
aluminio (1)
 Names: Aluminium
 
aluminium (62)
 Allotrope: Tin
 Atomic data: Aluminium
 Biography: Dmitriy Ivanovich Mendeleyev
 Biography: Friedrich Wöhler
 Biography: Hans Christian Oersted
 Biography: Sir Humphry Davy
 Compounds: Aluminium
 Compounds: Barium
 Compounds: Chlorine
 Compounds: Fluorine
 Compounds: Indium
 Compounds: Lithium
 Compounds: Phosphorus
 Compounds: Titanium
 Compounds: Yttrium
 Country: Australia
 Country: Brazil
 Country: Canada
 Country: China
 Country: Ghana
 Country: Guinea
 Country: Indonesia
 Country: Jamaica
 Country: Outer space
 Country: Russia
 Data1: Aluminium
 Data1: Bromine
 Data1: Calcium
 Data1: Copper
 Data1: Gallium
 Data1: Germanium
 Data1: Lithium
 Data1: Magnesium
 Data1: Manganese
 Data1: Mercury
 Data1: Scandium
 Data1: Tantalum
 Data1: Tin
 Data1: Titanium
 Data1: Yttrium
 Data2: Aluminium
 Data2: Bromine
 Data2: Iodine
 Data2: Platinum
 Document: Abundance of the Elements in the Solar System
 Glossary: Alloy
 Isotope: Aluminium
 MAC data: Aluminium
 Names: Aluminium
 On This Day... 10 April
 On This Day... 11 March
 On This Day... 14 August
 Production: Aluminium
 Production: Boron
 Production: Caesium
 Production: Gallium
 Production: Strontium
 Production: Sulfur
 Production: Technetium
 Production: Zinc
 Reactions: Aluminium
 Spectrum: Aluminium
 
alumino (1)
 On This Day... 18 January
 
aluminum (12)
 Biography: Robert Wilhelm Bunsen
 Biography: Sir Humphry Davy
 Compounds: Aluminium
 Compounds: Lutetium
 Data1: Aluminium
 Document: Chemical makeup of the human body
 On This Day... 13 January
 On This Day... 22 November
 On This Day... 23 February
 On This Day... 31 December
 Production: Gallium
 Production: Hydrogen
 
alumium (1)
 Data1: Aluminium
 
alun (1)
 Data1: Aluminium
 
alunite (2)
 Data1: Sulfur
 Production: Sulfur
 
alvin (1)
 Data1: Helium
 
alvite (2)
 Data1: Hafnium
 Production: Hafnium
 
always (20)
 Biography: John William Strutt Rayleigh
 Biography: Jöns Jacob Berzelius
 Biography: Sir Humphry Davy
 Compounds: Carbon
 Data1: Cobalt
 Data1: Lithium
 Data1: Tantalum
 Document: The Alkaline Earth Metals (Group 2)
 Glossary: Atomic Charge
 Glossary: Gamma Ray
 Glossary: Molecule
 Glossary: Oxidation State
 Glossary: Periods
 Glossary: Transactinides
 On This Day... 9 August
 Production: Aluminium
 Production: Boron
 Production: Cadmium
 Production: Titanium
 Production: Uranium
 
am (125)
 Data1: Actinium
 Data1: Aluminium
 Data1: Americium
 Data1: Antimony
 Data1: Argon
 Data1: Arsenic
 Data1: Astatine
 Data1: Barium
 Data1: Berkelium
 Data1: Beryllium
 Data1: Bismuth
 Data1: Bohrium
 Data1: Boron
 Data1: Bromine
 Data1: Cadmium
 Data1: Caesium
 Data1: Calcium
 Data1: Californium
 Data1: Carbon
 Data1: Cerium
 Data1: Chlorine
 Data1: Chromium
 Data1: Cobalt
 Data1: Copper
 Data1: Curium
 Data1: Darmstadtium
 Data1: Dubnium
 Data1: Dysprosium
 Data1: Einsteinium
 Data1: Erbium
 Data1: Europium
 Data1: Fermium
 Data1: Fluorine
 Data1: Francium
 Data1: Gadolinium
 Data1: Gallium
 Data1: Germanium
 Data1: Gold
 Data1: Hafnium
 Data1: Hassium
 Data1: Helium
 Data1: Holmium
 Data1: Hydrogen
 Data1: Indium
 Data1: Iodine
 Data1: Iridium
 Data1: Iron
 Data1: Krypton
 Data1: Lanthanum
 Data1: Lawrencium
 Data1: Lead
 Data1: Lithium
 Data1: Lutetium
 Data1: Magnesium
 Data1: Manganese
 Data1: Meitnerium
 Data1: Mendelevium
 Data1: Mercury
 Data1: Molybdenum
 Data1: Neodymium
 Data1: Neon
 Data1: Neptunium
 Data1: Nickel
 Data1: Niobium
 Data1: Nitrogen
 Data1: Nobelium
 Data1: Osmium
 Data1: Oxygen
 Data1: Palladium
 Data1: Phosphorus
 Data1: Platinum
 Data1: Plutonium
 Data1: Polonium
 Data1: Potassium
 Data1: Praseodymium
 Data1: Promethium
 Data1: Protactinium
 Data1: Radium
 Data1: Radon
 Data1: Rhenium
 Data1: Rhodium
 Data1: Roentgenium
 Data1: Rubidium
 Data1: Ruthenium
 Data1: Rutherfordium
 Data1: Samarium
 Data1: Scandium
 Data1: Seaborgium
 Data1: Selenium
 Data1: Silicon
 Data1: Silver
 Data1: Sodium
 Data1: Strontium
 Data1: Sulfur
 Data1: Tantalum
 Data1: Technetium
 Data1: Tellurium
 Data1: Terbium
 Data1: Thallium
 Data1: Thorium
 Data1: Thulium
 Data1: Tin
 Data1: Titanium
 Data1: Tungsten
 Data1: Ununbium
 Data1: Ununhexium
 Data1: Ununoctium
 Data1: Ununpentium
 Data1: Ununquadium
 Data1: Ununseptium
 Data1: Ununtrium
 Data1: Uranium
 Data1: Vanadium
 Data1: Xenon
 Data1: Ytterbium
 Data1: Yttrium
 Data1: Zinc
 Data1: Zirconium
 Isotope: Americium
 Isotope: Berkelium
 Isotope: Curium
 Isotope: Plutonium
 Production: Berkelium
 Production: Neptunium
 Spectrum: Americium
 
am+2 (1)
 Data2: Americium
 
am+3 (1)
 Data2: Americium
 
am+4 (1)
 Data2: Americium
 
am+5 (1)
 Data2: Americium
 
am+6 (1)
 Data2: Americium
 
am243 (1)
 Data1: Dubnium
 
amadeo (1)
 On This Day... 9 August
 
amaldi (1)
 Biography: Enrico Fermi
 
amalgam (5)
 Data1: Calcium
 Data1: Thallium
 Data2: Mercury
 Glossary: Amalgam
 Production: Gallium
 
amalgamation (2)
 Country: Peru
 Data1: Mercury
 
amalgams (1)
 Data1: Mercury
 
amarillo (2)
 Country: United States of America
 Data1: Helium
 
amateur (3)
 Data1: Cerium
 Data1: Lithium
 Data1: Titanium
 
amato (1)
 On This Day... 17 April
 
amazing (2)
 Compounds: Neodymium
 Data1: Yttrium
 
amazon (1)
 Data1: Mercury
 
ambassadors (1)
 Data1: Gold
 
ambient (5)
 Equation: Avogadro's law
 Reactions: Nickel
 Reactions: Tin
 Reactions: Titanium
 Reactions: Uranium
 
amblygonite (2)
 Data1: Lithium
 Production: Lithium
 
amenable (1)
 Compounds: Zinc
 
amendments (1)
 Compounds: Magnesium
 
america (20)
 Compounds: Dysprosium
 Compounds: Terbium
 Country: Canada
 Country: Oceans / Seas
 Country: United States of America
 Data1: Americium
 Data1: Copper
 Data1: Gold
 Data1: Osmium
 Data1: Palladium
 Data1: Rhodium
 Data1: Titanium
 Production: Astatine
 Production: Gold
 Production: Mercury
 Production: Osmium
 Production: Palladium
 Production: Rhodium
 Production: Ruthenium
 Production: Titanium
 
american (46)
 Biography: Albert Ghiorso
 Biography: Arthur C. Wahl
 Biography: Arthur Jeffrey Dempster
 Biography: Edwin Mattison McMillan
 Biography: Enrico Fermi
 Biography: Glenn Theodore Seaborg
 Biography: Joseph Priestley
 Biography: Joseph W. Kennedy
 Country: Spain
 Country: United States of America
 Data1: Boron
 Data1: Dubnium
 Data1: Gold
 Data1: Helium
 Data1: Lawrencium
 Data1: Lead
 Data1: Neodymium
 Data1: Niobium
 Data1: Nobelium
 Data1: Platinum
 Data1: Radon
 Data1: Seaborgium
 Data1: Tin
 Data1: Ununoctium
 On This Day... 1 November
 On This Day... 10 July
 On This Day... 12 December
 On This Day... 14 August
 On This Day... 15 July
 On This Day... 18 March
 On This Day... 18 September
 On This Day... 19 April
 On This Day... 19 November
 On This Day... 20 April
 On This Day... 25 October
 On This Day... 28 August
 On This Day... 29 July
 On This Day... 3 April
 On This Day... 30 May
 On This Day... 31 May
 On This Day... 8 April
 On This Day... 8 September
 On This Day... 9 April
 On This Day... 9 July
 Production: Platinum
 Production: Radon
 
americans (4)
 Data1: Platinum
 Data1: Radon
 Data1: Rutherfordium
 Data1: Seaborgium
 
americas (2)
 Data1: Copper
 Data1: Gold
 
americij (1)
 Names: Americium
 
americio (1)
 Names: Americium
 
americium (24)
 Atomic data: Americium
 Biography: Albert Ghiorso
 Biography: Glenn Theodore Seaborg
 Compounds: Americium
 Data1: Americium
 Data1: Berkelium
 Data1: Curium
 Data1: Ununpentium
 Data1: Ununtrium
 Data2: Americium
 Document: The Actinoid Series
 Isotope: Americium
 MAC data: Americium
 Names: Americium
 On This Day... 11 November
 On This Day... 13 September
 Production: Americium
 Production: Curium
 Production: Dubnium
 Production: Technetium
 Production: Ununpentium
 Production: Ununtrium
 Reactions: Americium
 Spectrum: Americium
 
ames (2)
 Data1: Neodymium
 On This Day... 16 December
 
amethyst (1)
 Production: Silicon
 
amides (1)
 On This Day... 22 July
 
amine (1)
 Production: Thorium
 
amines (2)
 Data1: Bromine
 On This Day... 13 August
 
amino (5)
 Biography: Louis Nicolas Vauquelin
 Biography: Philip Hauge Abelson
 Biography: William Hyde Wollaston
 On This Day... 4 September
 On This Day... 9 January
 
ammmonia (1)
 Data1: Lanthanum
 
ammonia (15)
 Biography: John Dalton
 Biography: Joseph Priestley
 Biography: Robert Wilhelm Bunsen
 Compounds: Phosphorus
 Data1: Chlorine
 Data1: Hydrogen
 Data1: Iodine
 Data2: Bromine
 Data2: Chlorine
 Data2: Iodine
 Data2: Mercury
 Data2: Silver
 On This Day... 9 December
 On This Day... 9 February
 Production: Hydrogen
 
ammonium (19)
 Biography: Friedrich Wöhler
 Compounds: Bromine
 Compounds: Cerium
 Compounds: Iodine
 Compounds: Nitrogen
 Compounds: Sodium
 Data1: Hafnium
 Data1: Lanthanum
 Data1: Neodymium
 Data1: Nitrogen
 Data1: Palladium
 Data1: Rhodium
 Data1: Sulfur
 Data2: Cadmium
 Data2: Cobalt
 Data2: Vanadium
 On This Day... 22 February
 Production: Rhenium
 Production: Ruthenium
 
ammunition (2)
 Compounds: Phosphorus
 Data1: Lead
 
amo2 (1)
 Compounds: Americium
 
among (37)
 Allotrope: Carbon
 Biography: Antoine-Laurent de Lavoisier
 Biography: Dmitriy Ivanovich Mendeleyev
 Biography: Gottfried Münzenberg
 Biography: Joseph Louis Gay-Lussac
 Biography: Julius Caesar Scaliger
 Biography: Otto Hahn
 Biography: Peter Armbruster
 Biography: Sir Humphry Davy
 Compounds: Lithium
 Compounds: Sodium
 Compounds: Zinc
 Country: Outer space
 Country: Russia
 Country: United States of America
 Data1: Aluminium
 Data1: Bismuth
 Data1: Caesium
 Data1: Cerium
 Data1: Copper
 Data1: Europium
 Data1: Francium
 Data1: Platinum
 Data1: Promethium
 Data1: Protactinium
 Data1: Tantalum
 Data1: Tellurium
 Data1: Vanadium
 Glossary: Allotrope
 Glossary: Alloy
 Glossary: Alpha Decay
 Glossary: IUPAC
 Glossary: Magic Number
 Glossary: Vickers Hardness
 Isotope: Magnesium
 Production: Rubidium
 Production: Vanadium
 
amongst (2)
 Biography: Ida Eva Tacke Noddack
 On This Day... 2 May
 
amorphous (9)
 Allotrope: Arsenic
 Allotrope: Boron
 Allotrope: Carbon
 Allotrope: Selenium
 Allotrope: Sulfur
 Data1: Silicon
 Data2: Sulfur
 Glossary: Allotrope
 Glossary: Amorphous
 
amount (134)
 Allotrope: Carbon
 Biography: John William Strutt Rayleigh
 Biography: Robert Wilhelm Bunsen
 Compounds: Aluminium
 Compounds: Argon
 Compounds: Carbon
 Compounds: Chlorine
 Compounds: Iodine
 Compounds: Sodium
 Country: Algeria
 Country: Argentina
 Country: Armenia
 Country: Australia
 Country: Bolivia
 Country: Botswana
 Country: Brazil
 Country: Bulgaria
 Country: Burkina Faso
 Country: Burma (Myanmar)
 Country: Burundi
 Country: Cameroon
 Country: Canada
 Country: Chile
 Country: China
 Country: Colombia
 Country: Costa Rica
 Country: Cuba
 Country: Democratic People's Republic of Korea
 Country: Democratic Republic of Congo
 Country: Ecuador
 Country: Ethiopia
 Country: Fiji
 Country: Finland
 Country: French Guiana
 Country: Gabon
 Country: Georgia
 Country: Ghana
 Country: Greece
 Country: Greenland
 Country: Guatemala
 Country: Guinea
 Country: Guyana
 Country: Honduras
 Country: India
 Country: Indonesia
 Country: Iran
 Country: Ireland
 Country: Italy
 Country: Ivory Coast
 Country: Japan
 Country: Kazakhstan
 Country: Kenya
 Country: Kyrgyzstan
 Country: Laos
 Country: Macedonia
 Country: Malaysia
 Country: Mali
 Country: Mexico
 Country: Mongolia
 Country: Morocco
 Country: Namibia
 Country: New Zealand
 Country: Nicaragua
 Country: Niger
 Country: Oceans / Seas
 Country: Papua New Guinea
 Country: Peru
 Country: Philippines
 Country: Poland
 Country: Republic of Korea
 Country: Romania
 Country: Russia
 Country: Saudi Arabia
 Country: Senegal
 Country: Serbia
 Country: Slovakia
 Country: South Africa
 Country: Spain
 Country: Sudan
 Country: Suriname
 Country: Sweden
 Country: Tajikistan
 Country: Tanzania
 Country: Thailand
 Country: Tunisia
 Country: Turkey
 Country: Uganda
 Country: United Kingdom
 Country: United States of America
 Country: Uruguay
 Country: Uzbekistan
 Country: Venezuela
 Country: Vietnam
 Country: Zambia
 Country: Zimbabwe
 Data1: Argon
 Data1: Astatine
 Data1: Carbon
 Data1: Copper
 Data1: Einsteinium
 Data1: Lead
 Data1: Lutetium
 Data1: Niobium
 Data1: Rubidium
 Data1: Ruthenium
 Data1: Tin
 Equation: Boyle's Law
 Glossary: Deliquescent
 Glossary: Elecron Work Function
 Glossary: Electron Volt
 Glossary: Enthalpy Change of Fusion (Heat of Fusion)
 Glossary: Enthalpy Change of Vapourisation
 Glossary: Half Life
 Glossary: Heat Capacity
 Glossary: Temperature
 Glossary: Young's Modulus
 Isotope: Americium
 Isotope: Lithium
 Isotope: Plutonium
 Isotope: Uranium
 On This Day... 12 December
 On This Day... 13 September
 On This Day... 16 February
 On This Day... 31 July
 Production: Astatine
 Production: Carbon
 Production: Einsteinium
 Production: Francium
 Production: Gold
 Production: Hydrogen
 Production: Indium
 Production: Krypton
 Production: Rhodium
 Production: Technetium
 
amounted (1)
 Production: Gold
 
amounts (74)
 Allotrope: Arsenic
 Compounds: Boron
 Compounds: Carbon
 Compounds: Iodine
 Compounds: Nitrogen
 Compounds: Sodium
 Compounds: Sulfur
 Country: Outer space
 Country: United Kingdom
 Data1: Actinium
 Data1: Astatine
 Data1: Berkelium
 Data1: Beryllium
 Data1: Boron
 Data1: Bromine
 Data1: Cobalt
 Data1: Curium
 Data1: Dysprosium
 Data1: Gadolinium
 Data1: Hydrogen
 Data1: Iodine
 Data1: Krypton
 Data1: Lanthanum
 Data1: Lithium
 Data1: Mendelevium
 Data1: Neptunium
 Data1: Niobium
 Data1: Osmium
 Data1: Palladium
 Data1: Plutonium
 Data1: Polonium
 Data1: Rhenium
 Data1: Scandium
 Data1: Selenium
 Data1: Sodium
 Data1: Sulfur
 Data1: Thorium
 Data1: Uranium
 Document: The Actinoid Series
 Document: The Halogens (Group 17)
 Glossary: Actinides
 Glossary: Actinoids
 Glossary: Air
 Glossary: Atomic Mass
 Glossary: Electron
 Glossary: Electron Volt
 Glossary: Halogens
 Isotope: Chlorine
 Isotope: Helium
 Isotope: Hydrogen
 Production: Actinium
 Production: Astatine
 Production: Bromine
 Production: Cadmium
 Production: Carbon
 Production: Europium
 Production: Francium
 Production: Gadolinium
 Production: Gold
 Production: Helium
 Production: Neodymium
 Production: Neptunium
 Production: Nitrogen
 Production: Platinum
 Production: Plutonium
 Production: Polonium
 Production: Promethium
 Production: Rubidium
 Production: Silver
 Production: Technetium
 Production: Terbium
 Production: Thallium
 Production: Thorium
 Production: Uranium
 
ampere (2)
 Data1: Iodine
 Equation: Electric current
 
amperes (2)
 Equation: Electric current
 Production: Zinc
 
amperometric (1)
 On This Day... 11 February
 
amphibole (1)
 Data1: Sodium
 
amphiboles (1)
 Production: Calcium
 
amphoteric (3)
 Compounds: Vanadium
 Glossary: Amphoteric
 On This Day... 6 April
 
amplifiers (1)
 Compounds: Erbium
 
amplitude (1)
 Glossary: Wavefunction
 
ampoules (1)
 Data1: Nitrogen
 
amsterdam (2)
 Biography: (Gabriel) Daniel Fahrenheit
 Biography: Emilio Gino Segre
 
amu (2)
 Glossary: Atomic mass unit (amu, u)
 Glossary: Spontaneous Fission
 
amusing (1)
 Data1: Helium
 
anaerobic (3)
 Production: Hydrogen
 Production: Sulfur
 Production: Technetium
 
anaesthetic (1)
 Compounds: Nitrogen
 
analgesic (1)
 Compounds: Nitrogen
 
analogous (2)
 Data1: Xenon
 Production: Selenium
 
analogue (1)
 Data1: Germanium
 
analogy (2)
 Data1: Americium
 Data1: Plutonium
 
analysed (1)
 Data1: Thorium
 
analyses (2)
 Biography: Robert Wilhelm Bunsen
 On This Day... 24 October
 
analysies (1)
 On This Day... 3 September
 
analysing (1)
 Glossary: Emission Spectrum
 
analysis (25)
 Biography: Clemens Alexander Winkler
 Biography: Dirk Coster
 Biography: Emilio Gino Segre
 Biography: John Dalton
 Biography: Jöns Jacob Berzelius
 Biography: Joseph Louis Gay-Lussac
 Biography: Louis Jacques Thenard
 Biography: Morris Travers
 Biography: Robert Wilhelm Bunsen
 Compounds: Boron
 Compounds: Sodium
 Data1: Caesium
 Data1: Californium
 Data1: Hafnium
 Data1: Neodymium
 Data1: Promethium
 Data1: Rhenium
 Data1: Scandium
 Data1: Titanium
 Glossary: Reagent
 On This Day... 10 March
 On This Day... 16 April
 On This Day... 17 October
 On This Day... 21 August
 On This Day... 23 January
 
analyst (3)
 Biography: Clemens Alexander Winkler
 Biography: Jean Charles Galissard de Marignac
 Data1: Cerium
 
analysts (1)
 Country: United States of America
 
analytical (16)
 Biography: Andreas Sigismund Marggraf
 Biography: Clemens Alexander Winkler
 Biography: Robert Wilhelm Bunsen
 Biography: Sir Humphry Davy
 Compounds: Iodine
 Compounds: Uranium
 Compounds: Zinc
 Data1: Bromine
 Data1: Cerium
 Data1: Uranium
 On This Day... 11 February
 On This Day... 21 February
 On This Day... 22 June
 On This Day... 25 June
 On This Day... 3 March
 On This Day... 5 December
 
analyze (1)
 Biography: William Hyde Wollaston
 
analyzed (4)
 Biography: Charles Hatchett
 Biography: Franz-Joseph Muller Freiherr von Reichenstein
 Data1: Zirconium
 Production: Titanium
 
analyzing (2)
 Biography: Robert Wilhelm Bunsen
 Data1: Lithium
 
anatase (2)
 Country: Australia
 Production: Titanium
 
anatole (1)
 Data1: Europium
 
anatolia (2)
 Data1: Copper
 Data1: Iron
 
anaxagoras (1)
 Biography: Walter Noddack
 
ancestors (2)
 Biography: Julius Caesar Scaliger
 On This Day... 12 January
 
ancestry (1)
 Biography: Robert Wilhelm Bunsen
 
ancient (19)
 Data1: Aluminium
 Data1: Arsenic
 Data1: Boron
 Data1: Cadmium
 Data1: Carbon
 Data1: Copper
 Data1: Lutetium
 Data1: Magnesium
 Data1: Manganese
 Data1: Mercury
 Data1: Nickel
 Data1: Phosphorus
 Data1: Silver
 Data1: Thulium
 Data1: Zinc
 Isotope: Strontium
 On This Day... 31 December
 Production: Carbon
 Production: Potassium
 
ancients (13)
 Biography: Julius Caesar Scaliger
 Data1: Antimony
 Data1: Bismuth
 Data1: Carbon
 Data1: Copper
 Data1: Gold
 Data1: Iron
 Data1: Lead
 Data1: Mercury
 Data1: Silver
 Data1: Sulfur
 Data1: Tin
 Production: Tin
 
andat (1)
 Biography: Robert Wilhelm Bunsen
 
anders (3)
 Biography: Anders Gustaf Ekeberg
 Data1: Tantalum
 On This Day... 16 January
 
andes (3)
 Country: Chile
 Data1: Copper
 Production: Iodine
 
andiette (1)
 Biography: Julius Caesar Scaliger
 
andr (1)
 On This Day... 10 November
 
andrade (1)
 Data1: Lithium
 
andre (6)
 Biography: Andre Louis Debierne
 Biography: Louis Nicolas Vauquelin
 Data1: Actinium
 Data1: Iodine
 Data1: Radium
 On This Day... 14 July
 
andreas (4)
 Biography: Andreas Sigismund Marggraf
 Compounds: Cobalt
 Data1: Zinc
 On This Day... 3 March
 
andrei (2)
 Allotrope: Carbon
 On This Day... 21 May
 
andres (1)
 Data1: Vanadium
 
andrews (1)
 On This Day... 19 December
 
andromeda (2)
 Country: Outer space
 Production: Promethium
 
anemia (4)
 Compounds: Cobalt
 Compounds: Copper
 Compounds: Iron
 Data1: Radium
 
anemic (1)
 Compounds: Copper
 
anencephaly (1)
 Glossary: Teratogenic
 
anesthesia (1)
 Compounds: Sodium
 
anesthesiologist (1)
 Compounds: Nitrogen
 
anesthetic (5)
 Biography: Sir Humphry Davy
 Compounds: Zinc
 On This Day... 11 December
 On This Day... 16 October
 On This Day... 30 March
 
anfinsen (1)
 On This Day... 4 September
 
anfo (1)
 Data1: Nitrogen
 
angeles (1)
 Biography: Glenn Theodore Seaborg
 
angle (5)
 Biography: Peter Armbruster
 Compounds: Germanium
 Data1: Germanium
 Glossary: Thermal Conductivity
 Glossary: Vickers Hardness
 
angles (2)
 Biography: William Hyde Wollaston
 Glossary: Gamma Ray
 
anglesite (1)
 Production: Lead
 
anglicized (1)
 Data1: Copper
 
angstrom (1)
 Glossary: Angstrom
 
anguish (1)
 Biography: Irene Joliot-Curie
 
angular (1)
 Compounds: Neodymium
 
anhydrase (1)
 Production: Cadmium
 
anhydrases (1)
 Production: Cadmium
 
anhydride (2)
 Compounds: Vanadium
 Data1: Boron
 
anhydrides (1)
 Biography: Ida Eva Tacke Noddack
 
anhydrous (18)
 Compounds: Cobalt
 Compounds: Copper
 Compounds: Europium
 Compounds: Sodium
 Data1: Aluminium
 Data1: Bromine
 Data1: Erbium
 Data1: Indium
 Data1: Yttrium
 Glossary: Anhydrous
 On This Day... 11 March
 On This Day... 4 June
 Production: Aluminium
 Production: Gadolinium
 Production: Holmium
 Production: Lutetium
 Reactions: Iridium
 Reactions: Rhodium
 
anilides (1)
 On This Day... 22 July
 
aniline (1)
 Biography: Robert Wilhelm Bunsen
 
animal (11)
 Biography: Antoine-Laurent de Lavoisier
 Compounds: Zinc
 Data1: Magnesium
 Data1: Oxygen
 Data1: Sodium
 Glossary: Acid
 Glossary: Gamma Ray
 Glossary: Thermal Conductivity
 Isotope: Strontium
 On This Day... 26 March
 Production: Nitrogen
 
animals (14)
 Biography: George Charles de Hevesy
 Biography: Julius Caesar Scaliger
 Compounds: Iron
 Compounds: Nitrogen
 Compounds: Sodium
 Data1: Cobalt
 Data1: Copper
 Data1: Iron
 Data1: Lanthanum
 Data1: Oxygen
 Data1: Phosphorus
 Data1: Plutonium
 Isotope: Potassium
 Production: Oxygen
 
animosity (1)
 Biography: Julius Caesar Scaliger
 
anion (6)
 Glossary: Anion
 Glossary: Atomic Charge
 Glossary: Cation
 Glossary: Ion
 Production: Thorium
 Reactions: Titanium
 
anionic (1)
 Production: Technetium
 
anions (2)
 Glossary: Atomic Charge
 Glossary: Non-Metals
 
anisotropic (1)
 Glossary: Shear Modulus
 
anna (1)
 Biography: Dmitriy Ivanovich Mendeleyev
 
annalen (1)
 Data1: Titanium
 
annales (2)
 Biography: Antoine-Jerome Balard
 Biography: Pierre Jules César Janssen
 
annals (1)
 Data1: Sodium
 
anne (2)
 Biography: Antoine-Laurent de Lavoisier
 On This Day... 20 January
 
annexation (1)
 Biography: Lise Meitner
 
annihilated (1)
 Glossary: Antiproton
 
announce (1)
 Data1: Promethium
 
announced (37)
 Biography: Andreas Sigismund Marggraf
 Biography: Bernard Courtois
 Biography: Carl Gustav Mosander
 Biography: Charles Hatchett
 Biography: Lise Meitner
 Biography: Robert Wilhelm Bunsen
 Biography: Smithson Tennant
 Compounds: Argon
 Data1: Americium
 Data1: Bohrium
 Data1: Californium
 Data1: Dubnium
 Data1: Gallium
 Data1: Hassium
 Data1: Iodine
 Data1: Meitnerium
 Data1: Nobelium
 Data1: Rhenium
 Data1: Rutherfordium
 Data1: Seaborgium
 Data1: Ununhexium
 Data1: Ununoctium
 On This Day... 10 May
 On This Day... 11 November
 On This Day... 12 July
 On This Day... 14 December
 On This Day... 15 November
 On This Day... 16 February
 On This Day... 16 June
 On This Day... 17 December
 On This Day... 22 February
 On This Day... 26 November
 On This Day... 3 July
 On This Day... 30 April
 On This Day... 5 May
 On This Day... 8 June
 On This Day... 9 September
 
announcement (4)
 On This Day... 12 December
 On This Day... 27 September
 On This Day... 28 November
 On This Day... 29 December
 
annoyed (1)
 Data1: Cerium
 
annual (47)
 Country: Canada
 Country: Colombia
 Country: Russia
 Country: South Africa
 Country: United States of America
 Data1: Aluminium
 Data1: Antimony
 Data1: Barium
 Data1: Beryllium
 Data1: Cadmium
 Data1: Calcium
 Data1: Cobalt
 Data1: Copper
 Data1: Europium
 Data1: Gadolinium
 Data1: Helium
 Data1: Holmium
 Data1: Hydrogen
 Data1: Iodine
 Data1: Iron
 Data1: Lead
 Data1: Lutetium
 Data1: Magnesium
 Data1: Manganese
 Data1: Mercury
 Data1: Molybdenum
 Data1: Palladium
 Data1: Platinum
 Data1: Plutonium
 Data1: Polonium
 Data1: Praseodymium
 Data1: Rhenium
 Data1: Rhodium
 Data1: Tellurium
 Data1: Thallium
 Data1: Thorium
 Data1: Thulium
 Data1: Tin
 Data1: Tungsten
 Data1: Uranium
 Data1: Vanadium
 Data1: Ytterbium
 Data1: Yttrium
 Data1: Zinc
 Data1: Zirconium
 Production: Rhodium
 Production: Titanium
 
annually (21)
 Country: Russia
 Data1: Bismuth
 Data1: Carbon
 Data1: Dysprosium
 Data1: Erbium
 Data1: Iridium
 Data1: Lanthanum
 Data1: Neodymium
 Data1: Nickel
 Data1: Niobium
 Data1: Nitrogen
 Data1: Potassium
 Data1: Samarium
 Data1: Selenium
 Data1: Silver
 Data1: Strontium
 Data1: Sulfur
 Data1: Tantalum
 Data1: Technetium
 Data1: Terbium
 Production: Helium
 
anode (10)
 Biography: Michael Faraday
 Glossary: Anode
 Glossary: Cathode
 On This Day... 31 December
 Production: Aluminium
 Production: Barium
 Production: Hydrogen
 Production: Magnesium
 Production: Selenium
 Production: Tellurium
 
anodes (1)
 Production: Aluminium
 
anomalies (2)
 Glossary: Electron Capture
 Isotope: Calcium
 
anomalous (3)
 Biography: Emilio Gino Segre
 Isotope: Magnesium
 On This Day... 1 October
 
anomaly (1)
 Production: Europium
 
anopheles (1)
 On This Day... 13 May
 
another (34)
 Allotrope: Plutonium
 Biography: Irene Joliot-Curie
 Biography: Julius Caesar Scaliger
 Biography: Robert Wilhelm Bunsen
 Compounds: Molybdenum
 Compounds: Sulfur
 Data1: Arsenic
 Data1: Chlorine
 Data1: Einsteinium
 Data1: Gold
 Data1: Technetium
 Data1: Tellurium
 Data1: Ununhexium
 Equation: Graham's Law
 Glossary:
 Glossary: Allotrope
 Glossary: Alpha Decay
 Glossary: Atomic Charge
 Glossary: Double Beta Decay
 Glossary: Double Electron Capture
 Glossary: Isotope
 Glossary: Refractory
 Isotope: Strontium
 Production: Einsteinium
 Production: Helium
 Production: Hydrogen
 Production: Iodine
 Production: Oxygen
 Production: Plutonium
 Production: Potassium
 Production: Rhenium
 Production: Silicon
 Production: Silver
 Production: Zinc
 
answer (2)
 Biography: Pierre Jules César Janssen
 Data1: Cerium
 
ant (2)
 Data1: Thallium
 Glossary: Acid
 
antacid (5)
 Compounds: Bismuth
 Compounds: Calcium
 Compounds: Magnesium
 Compounds: Phosphorus
 Compounds: Sodium
 
antarctica (1)
 Allotrope: Carbon
 
anthracite (1)
 Allotrope: Carbon
 
anthropogenic (1)
 Production: Selenium
 
anti (19)
 Biography: Emilio Gino Segre
 Compounds: Bismuth
 Compounds: Boron
 Compounds: Silicon
 Compounds: Sodium
 Data1: Antimony
 Data1: Boron
 Data1: Bromine
 Data1: Europium
 Data1: Platinum
 Data1: Ruthenium
 Data1: Selenium
 Data1: Sodium
 Glossary: Anti-Neutrino
 Glossary: Double Beta Decay
 Glossary: Electron Emission (Beta- Decay)
 Glossary: Magnetic Ordering
 On This Day... 26 July
 On This Day... 30 October
 
antibacterial (2)
 Compounds: Silver
 On This Day... 30 October
 
antibiotic (2)
 Compounds: Bismuth
 Production: Boron
 
antibiotics (2)
 Allotrope: Carbon
 Biography: Irene Joliot-Curie
 
anticaking (1)
 Compounds: Sodium
 
anticipated (2)
 Biography: Henry Cavendish
 Biography: Julius Caesar Scaliger
 
anticoagulant (2)
 Data1: Lanthanum
 Data1: Neodymium
 
antidepressant (1)
 Data1: Lithium
 
antidote (3)
 Biography: Robert Wilhelm Bunsen
 Compounds: Sodium
 Data1: Thallium
 
antiferromagnet (1)
 Glossary: Magnetic Ordering
 
antiferromagnetic (3)
 Data2: Chromium
 Data2: Samarium
 Glossary: Magnetic Ordering
 
antiferromagnetism (1)
 Glossary: Magnetic Ordering
 
antiferromagnets (1)
 Glossary: Magnetic Ordering
 
antimatter (3)
 Glossary: Antimatter
 Glossary: Antiproton
 Glossary: Positron
 
antimoine (1)
 Names: Antimony
 
antimon (1)
 Names: Antimony
 
antimonate (1)
 Data1: Antimony
 
antimonide (2)
 Compounds: Indium
 Compounds: Zinc
 
antimonio (1)
 Names: Antimony
 
antimony (28)
 Allotrope: Tin
 Atomic data: Antimony
 Biography: Franz-Joseph Muller Freiherr von Reichenstein
 Biography: Louis Jacques Thenard
 Compounds: Antimony
 Country: Bolivia
 Country: China
 Country: Russia
 Country: South Africa
 Country: Tajikistan
 Data1: Antimony
 Data1: Bismuth
 Data1: Lead
 Data1: Tellurium
 Data2: Antimony
 Document: Abundance of the Elements in the Solar System
 Document: Chemical makeup of the human body
 Isotope: Antimony
 MAC data: Antimony
 Names: Antimony
 Production: Antimony
 Production: Silver
 Production: Sulfur
 Production: Thallium
 Production: Uranium
 Reactions: Antimony
 Reactions: Ununpentium
 Spectrum: Antimony
 
antimoon (1)
 Names: Antimony
 
antineutrino (1)
 Glossary: Anti-Neutrino
 
antineutrinos (1)
 Glossary: Anti-Neutrino
 
antineutrons (1)
 Glossary: Antimatter
 
antioxidant (1)
 Compounds: Tin
 
antiparticle (2)
 Biography: Emilio Gino Segre
 Glossary: Antiproton
 
antiparticles (1)
 Glossary: Anti-Neutrino
 
antiperspirant (1)
 Data1: Aluminium
 
antiperspirants (1)
 Compounds: Aluminium
 
antiproton (5)
 Glossary: Antimatter
 Glossary: Antiproton
 Glossary: Positron
 Glossary: Proton
 On This Day... 18 October
 
antiprotons (3)
 Biography: Emilio Gino Segre
 Glossary: Antimatter
 Glossary: Antiproton
 
antiquity (6)
 Data1: Antimony
 Data1: Gold
 Data1: Iron
 Data1: Silver
 Data1: Tin
 Data1: Zinc
 
antirheumatic (1)
 Compounds: Gold
 
antiseptic (3)
 Compounds: Boron
 Data1: Chlorine
 Data1: Iodine
 
antiseptics (1)
 On This Day... 5 April
 
antistatic (2)
 Compounds: Indium
 Data1: Polonium
 
antoine (30)
 Biography: Antoine Alexandre Brutus Bussy
 Biography: Antoine-Jerome Balard
 Biography: Antoine-Laurent de Lavoisier
 Biography: Bernard Courtois
 Biography: John Dalton
 Biography: Joseph Louis Gay-Lussac
 Biography: Louis Jacques Thenard
 Biography: Louis Nicolas Vauquelin
 Biography: Sir Humphry Davy
 Data1: Barium
 Data1: Bromine
 Data1: Fluorine
 Data1: Hydrogen
 Data1: Oxygen
 Data1: Silicon
 Data1: Sulfur
 Data1: Uranium
 On This Day... 1 March
 On This Day... 15 December
 On This Day... 19 April
 On This Day... 19 November
 On This Day... 20 January
 On This Day... 26 April
 On This Day... 26 August
 On This Day... 26 March
 On This Day... 29 May
 On This Day... 3 July
 On This Day... 30 September
 On This Day... 7 March
 Production: Fluorine
 
antole (2)
 Biography: Eugene-Antole Demarcay
 On This Day... 1 January
 
anton (4)
 Data1: Hafnium
 Data1: Thorium
 Data1: Titanium
 Data1: Zirconium
 
antonio (2)
 Data1: Platinum
 On This Day... 11 January
 
ants (1)
 Data1: Boron
 
anxiety (1)
 Data1: Barium
 
any (62)
 Allotrope: Carbon
 Allotrope: Oxygen
 Biography: Ida Eva Tacke Noddack
 Biography: Julius Caesar Scaliger
 Biography: Sir Humphry Davy
 Compounds: Lithium
 Compounds: Selenium
 Compounds: Sulfur
 Country: Madagascar
 Data1: Aluminium
 Data1: Astatine
 Data1: Beryllium
 Data1: Bohrium
 Data1: Cadmium
 Data1: Caesium
 Data1: Dysprosium
 Data1: Fluorine
 Data1: Francium
 Data1: Gallium
 Data1: Helium
 Data1: Iridium
 Data1: Lead
 Data1: Manganese
 Data1: Mercury
 Data1: Nickel
 Data1: Platinum
 Data1: Plutonium
 Data1: Polonium
 Data1: Rhenium
 Data1: Ruthenium
 Data1: Samarium
 Data1: Tellurium
 Data1: Terbium
 Data1: Tin
 Data1: Titanium
 Document: The Actinoid Series
 Document: The Transition Metals (Groups 3 to 12)
 Glossary: Acid
 Glossary: Alpha Decay
 Glossary: Antiproton
 Glossary: Atomic Mass
 Glossary: Atomic Number (Z)
 Glossary: Carcinogen
 Glossary: Magnetic Ordering
 Glossary: Spontaneous Fission
 Glossary: Superconducting temperature
 Isotope: Tellurium
 On This Day... 21 January
 On This Day... 9 August
 Production: Astatine
 Production: Fluorine
 Production: Francium
 Production: Gallium
 Production: Helium
 Production: Lead
 Production: Radon
 Production: Titanium
 Production: Uranium
 Reactions: Gold
 Reactions: Krypton
 Reactions: Magnesium
 Reactions: Tungsten
 
anyhdrous (1)
 Compounds: Cobalt
 
anyone (2)
 Data1: Americium
 Production: Uranium
 
anything (7)
 Biography: Jöns Jacob Berzelius
 Biography: Michael Faraday
 Data1: Terbium
 Document: The Actinoid Series
 Glossary: Actinides
 Glossary: Actinoids
 Reactions: Lithium
 
anywhere (1)
 Data1: Bohrium
 
aparatus (1)
 Biography: Arthur Jeffrey Dempster
 
apart (5)
 Biography: John William Strutt Rayleigh
 Biography: Philip Hauge Abelson
 Data1: Terbium
 Isotope: Uranium
 Production: Tellurium
 
apatite (6)
 Country: China
 Country: Russia
 Country: Ukraine
 Data1: Phosphorus
 Glossary: Moh's Scale of Hardness
 Production: Phosphorus
 
apertures (1)
 Production: Iron
 
apex (1)
 Data1: Aluminium
 
aphrodite (1)
 Data1: Copper
 
apocryphal (1)
 Data1: Phosphorus
 
apollo (6)
 Country: Outer space
 Data1: Yttrium
 Data1: Zirconium
 Production: Titanium
 Production: Yttrium
 Production: Zirconium
 
apothecary (4)
 Biography: Karl Wilhelm Scheele
 Biography: Louis Nicolas Vauquelin
 Biography: Martin Heinrich Klaproth
 Biography: Sir Humphry Davy
 
appalachian (1)
 Production: Radon
 
apparatus (4)
 Biography: Joseph Louis Gay-Lussac
 Biography: Joseph Priestley
 Biography: Robert Wilhelm Bunsen
 Data1: Magnesium
 
apparent (2)
 Biography: Robert Wilhelm Bunsen
 Compounds: Sodium
 
apparently (7)
 Data1: Americium
 Data1: Berkelium
 Data1: Lithium
 Data1: Scandium
 Data1: Ununquadium
 Production: Sulfur
 Reactions: Helium
 
appear (9)
 Biography: John Dalton
 Data1: Bohrium
 Data1: Neodymium
 Glossary: Absorption Spectrum
 Production: Boron
 Reactions: Hafnium
 Reactions: Tantalum
 Reactions: Titanium
 Reactions: Zirconium
 
appearance (31)
 Allotrope: Boron
 Allotrope: Phosphorus
 Compounds: Molybdenum
 Compounds: Sulfur
 Compounds: Tantalum
 Compounds: Vanadium
 Compounds: Zirconium
 Data1: Antimony
 Data1: Berkelium
 Data1: Bohrium
 Data1: Californium
 Data1: Darmstadtium
 Data1: Dubnium
 Data1: Einsteinium
 Data1: Fermium
 Data1: Hassium
 Data1: Lawrencium
 Data1: Meitnerium
 Data1: Mendelevium
 Data1: Neodymium
 Data1: Nobelium
 Data1: Potassium
 Data1: Roentgenium
 Data1: Rutherfordium
 Data1: Seaborgium
 Data1: Ununbium
 Data1: Ununhexium
 Data1: Ununpentium
 Data1: Ununquadium
 Data1: Ununseptium
 Data1: Ununtrium
 
appeared (4)
 Biography: Antoine-Laurent de Lavoisier
 Biography: Joseph Priestley
 Biography: Julius Caesar Scaliger
 Data1: Ununoctium
 
appears (16)
 Biography: John Dalton
 Biography: Pierre Jules César Janssen
 Compounds: Titanium
 Data1: Aluminium
 Data1: Copper
 Data1: Holmium
 Data1: Platinum
 Data1: Selenium
 Data1: Sodium
 Document: The Alkali (Group 1) Metals
 Glossary: Emission Spectrum
 Production: Silicon
 Production: Technetium
 Reactions: Magnesium
 Reactions: Nickel
 Reactions: Niobium
 
appetites (1)
 Biography: Joseph Louis Gay-Lussac
 
apple (1)
 Compounds: Neodymium
 
apples (1)
 Compounds: Sodium
 
appliances (3)
 Compounds: Silicon
 Data1: Aluminium
 Data1: Tantalum
 
application (16)
 Compounds: Chlorine
 Compounds: Dysprosium
 Compounds: Magnesium
 Compounds: Molybdenum
 Compounds: Phosphorus
 Compounds: Terbium
 Compounds: Thorium
 Compounds: Zinc
 Data1: Indium
 Data1: Scandium
 Data1: Selenium
 Data1: Thorium
 Glossary: Magnetic Ordering
 Isotope: Iridium
 On This Day... 11 June
 Production: Silver
 
applications (51)
 Allotrope: Carbon
 Allotrope: Oxygen
 Allotrope: Plutonium
 Biography: Arthur Jeffrey Dempster
 Compounds: Beryllium
 Compounds: Boron
 Compounds: Cadmium
 Compounds: Chlorine
 Compounds: Chromium
 Compounds: Copper
 Compounds: Indium
 Compounds: Lithium
 Compounds: Magnesium
 Compounds: Neodymium
 Compounds: Potassium
 Compounds: Selenium
 Compounds: Silicon
 Compounds: Sodium
 Compounds: Sulfur
 Compounds: Tantalum
 Compounds: Titanium
 Compounds: Zinc
 Data1: Actinium
 Data1: Antimony
 Data1: Beryllium
 Data1: Bismuth
 Data1: Caesium
 Data1: Fluorine
 Data1: Gadolinium
 Data1: Germanium
 Data1: Iridium
 Data1: Molybdenum
 Data1: Neptunium
 Data1: Niobium
 Data1: Osmium
 Data1: Phosphorus
 Data1: Rhenium
 Data1: Rubidium
 Data1: Selenium
 Data1: Strontium
 Data1: Tellurium
 Data1: Tin
 Data1: Zirconium
 Document: The Alkali (Group 1) Metals
 Glossary: Spontaneous Fission
 Isotope: Bismuth
 Isotope: Neptunium
 Isotope: Nickel
 On This Day... 24 August
 Production: Fluorine
 Production: Zinc
 
applicaton (1)
 Compounds: Sulfur
 
applied (32)
 Allotrope: Carbon
 Biography: Institute for Heavy Ion Research (GSI)
 Biography: Jöns Jacob Berzelius
 Biography: Joseph Louis Gay-Lussac
 Biography: Lise Meitner
 Biography: Pierre Curie
 Compounds: Chlorine
 Compounds: Magnesium
 Compounds: Silver
 Compounds: Tin
 Compounds: Zinc
 Data1: Bohrium
 Data1: Darmstadtium
 Data1: Dubnium
 Data1: Hassium
 Data1: Iron
 Data1: Lawrencium
 Data1: Meitnerium
 Data1: Nickel
 Data1: Niobium
 Data1: Nobelium
 Data1: Rutherfordium
 Data1: Seaborgium
 Data1: Sodium
 Glossary: IUPAC
 Glossary: Magnetic Ordering
 Glossary: Magnetic Susceptibility (Mass)
 Glossary: Magnetic Susceptibility (Molar)
 Glossary: Poisson Ratio
 Glossary: Vickers Hardness
 Isotope: Carbon
 On This Day... 18 July
 
apply (1)
 Glossary: Atomic Mass
 
applying (2)
 Compounds: Silicon
 Glossary: Magnetic Ordering
 
appointed (14)
 Biography: Antoine-Jerome Balard
 Biography: Clemens Alexander Winkler
 Biography: Daniel Rutherford
 Biography: Dmitriy Ivanovich Mendeleyev
 Biography: Edwin Mattison McMillan
 Biography: Emilio Gino Segre
 Biography: Frederick Soddy
 Biography: Gustav Robert Kirchhoff
 Biography: Louis Nicolas Vauquelin
 Biography: Michael Faraday
 Biography: Pierre Curie
 Biography: Pierre Jules César Janssen
 Biography: Smithson Tennant
 Data1: Platinum
 
appointment (2)
 Biography: Jean Charles Galissard de Marignac
 Biography: Louis Jacques Thenard
 
appplied (1)
 Data1: Zinc
 
appreciable (2)
 Data1: Niobium
 Glossary: Semiconductor
 
appreciate (2)
 Biography: Andre Louis Debierne
 Biography: Jöns Jacob Berzelius
 
apprentice (2)
 Biography: Louis Nicolas Vauquelin
 Biography: Sir Humphry Davy
 
apprenticed (5)
 Biography: Bernard Courtois
 Biography: Ferdinand Frederic Henri Moissan
 Biography: Karl Wilhelm Scheele
 Biography: Martin Heinrich Klaproth
 Biography: Michael Faraday
 
apprenticeship (2)
 Biography: Jöns Jacob Berzelius
 Biography: Michael Faraday
 
approach (3)
 Biography: Joseph Louis Gay-Lussac
 Biography: Sir Humphry Davy
 On This Day... 4 February
 
approached (2)
 Data1: Europium
 Glossary: Kelvin (absolute temperature)
 
approaching (2)
 Data1: Helium
 Glossary: Melting Point (freezing point)
 
appropriate (3)
 Compounds: Cadmium
 Compounds: Zinc
 Isotope: Plutonium
 
appropriated (1)
 Data1: Nickel
 
approve (1)
 Biography: Julius Caesar Scaliger
 
approved (1)
 Biography: Lise Meitner
 
approx (86)
 Country: Afghanistan
 Country: Algeria
 Country: Argentina
 Country: Armenia
 Country: Australia
 Country: Austria
 Country: Belgium
 Country: Bhutan
 Country: Bolivia
 Country: Bosnia and Herzegovina
 Country: Brazil
 Country: Bulgaria
 Country: Burma (Myanmar)
 Country: Cameroon
 Country: Canada
 Country: Chile
 Country: China
 Country: Colombia
 Country: Costa Rica
 Country: Cuba
 Country: Democratic People's Republic of Korea
 Country: Democratic Republic of Congo
 Country: Ecuador
 Country: Egypt
 Country: El Salvador
 Country: Estonia
 Country: France
 Country: French Guiana
 Country: Gabon
 Country: Germany
 Country: Greece
 Country: Honduras
 Country: India
 Country: Indonesia
 Country: Iran
 Country: Ireland
 Country: Italy
 Country: Ivory Coast
 Country: Japan
 Country: Kazakhstan
 Country: Kenya
 Country: Kyrgyzstan
 Country: Laos
 Country: Latvia
 Country: Libya
 Country: Malaysia
 Country: Mexico
 Country: Morocco
 Country: Netherlands
 Country: Niger
 Country: Nigeria
 Country: Norway
 Country: Oman
 Country: Pakistan
 Country: Paraguay
 Country: Philippines
 Country: Poland
 Country: Portugal
 Country: Romania
 Country: Russia
 Country: Rwanda
 Country: Saudi Arabia
 Country: Senegal
 Country: Serbia
 Country: Sierra Leone
 Country: Somalia
 Country: South Africa
 Country: Spain
 Country: Sudan
 Country: Sweden
 Country: Switzerland
 Country: Trinidad and Tobago
 Country: Tunisia
 Country: Turkey
 Country: Turkmenistan
 Country: Uganda
 Country: Ukraine
 Country: United Arab Emirates
 Country: United Kingdom
 Country: United States of America
 Country: Uruguay
 Country: Uzbekistan
 Country: Venezuela
 Country: Vietnam
 Country: Zambia
 Equation: Henry's Law
 
approximate (5)
 Glossary: Moh's Scale of Hardness
 Glossary: Thermal Conductivity
 Production: Chromium
 Reactions: Praseodymium
 Reactions: Terbium
 
approximately (30)
 Allotrope: Carbon
 Biography: Dmitriy Ivanovich Mendeleyev
 Compounds: Sodium
 Country: India
 Data1: Americium
 Data1: Arsenic
 Data1: Carbon
 Data1: Gallium
 Data1: Neodymium
 Data1: Palladium
 Data1: Rhenium
 Data1: Silicon
 Glossary: Neutrino
 Glossary: pH
 Glossary: Thermal Conductivity
 Isotope: Lawrencium
 Isotope: Rutherfordium
 Isotope: Strontium
 Production: Aluminium
 Production: Bromine
 Production: Chromium
 Production: Copper
 Production: Helium
 Production: Hydrogen
 Production: Iron
 Production: Plutonium
 Production: Polonium
 Production: Rhenium
 Production: Rhodium
 Production: Titanium
 
apreece (1)
 Biography: Sir Humphry Davy
 
apricots (1)
 Compounds: Sulfur
 
april (47)
 Allotrope: Carbon
 Biography: Antoine-Jerome Balard
 Biography: Emilio Gino Segre
 Biography: Ferdinand Reich
 Biography: Georges Urbain
 Biography: Glenn Theodore Seaborg
 Biography: Jean Charles Galissard de Marignac
 Biography: Julius Caesar Scaliger
 Biography: Paul Emile Lecoq de Boisbaudran
 Biography: Philip Hauge Abelson
 Biography: Pierre Curie
 Biography: Sir William Crookes
 Data1: Chlorine
 Data1: Dubnium
 Data1: Nobelium
 On This Day... 1 April
 On This Day... 10 April
 On This Day... 11 April
 On This Day... 12 April
 On This Day... 13 April
 On This Day... 14 April
 On This Day... 15 April
 On This Day... 16 April
 On This Day... 17 April
 On This Day... 18 April
 On This Day... 19 April
 On This Day... 2 April
 On This Day... 20 April
 On This Day... 21 April
 On This Day... 22 April
 On This Day... 23 April
 On This Day... 24 April
 On This Day... 25 April
 On This Day... 26 April
 On This Day... 27 April
 On This Day... 28 April
 On This Day... 29 April
 On This Day... 3 April
 On This Day... 30 April
 On This Day... 4 April
 On This Day... 5 April
 On This Day... 6 April
 On This Day... 7 April
 On This Day... 8 April
 On This Day... 9 April
 Production: Copper
 Production: Nobelium
 
apt (1)
 Data1: Tungsten
 
aq (49)
 Glossary: Endothermic
 Production: Hydrogen
 Reactions: Aluminium
 Reactions: Barium
 Reactions: Beryllium
 Reactions: Bismuth
 Reactions: Bromine
 Reactions: Cadmium
 Reactions: Caesium
 Reactions: Calcium
 Reactions: Cerium
 Reactions: Chlorine
 Reactions: Chromium
 Reactions: Cobalt
 Reactions: Copper
 Reactions: Dysprosium
 Reactions: Erbium
 Reactions: Europium
 Reactions: Fluorine
 Reactions: Gadolinium
 Reactions: Holmium
 Reactions: Iodine
 Reactions: Iron
 Reactions: Lanthanum
 Reactions: Lithium
 Reactions: Lutetium
 Reactions: Magnesium
 Reactions: Manganese
 Reactions: Molybdenum
 Reactions: Neodymium
 Reactions: Nickel
 Reactions: Potassium
 Reactions: Praseodymium
 Reactions: Promethium
 Reactions: Radium
 Reactions: Rubidium
 Reactions: Samarium
 Reactions: Scandium
 Reactions: Silicon
 Reactions: Sodium
 Reactions: Strontium
 Reactions: Sulfur
 Reactions: Terbium
 Reactions: Thallium
 Reactions: Thulium
 Reactions: Titanium
 Reactions: Ytterbium
 Reactions: Yttrium
 Reactions: Zinc
 
aqua (14)
 Biography: George Charles de Hevesy
 Compounds: Nitrogen
 Data1: Iridium
 Data1: Osmium
 Data1: Palladium
 Data1: Rhodium
 Data1: Ruthenium
 Data1: Tantalum
 Glossary: Aqua regia
 Glossary: Reagent
 Production: Gold
 Reactions: Gold
 Reactions: Iridium
 Reactions: Rhodium
 
aquaculture (1)
 Compounds: Magnesium
 
aquamarine (3)
 Data1: Beryllium
 Production: Beryllium
 Production: Scandium
 
aquaous (1)
 Reactions: Nickel
 
aquaria (1)
 Compounds: Lead
 
aquarium (2)
 Compounds: Nitrogen
 Compounds: Silicon
 
aquariums (1)
 Data1: Titanium
 
aquated (27)
 Reactions: Beryllium
 Reactions: Caesium
 Reactions: Calcium
 Reactions: Cerium
 Reactions: Chromium
 Reactions: Copper
 Reactions: Dysprosium
 Reactions: Erbium
 Reactions: Holmium
 Reactions: Iron
 Reactions: Lanthanum
 Reactions: Lithium
 Reactions: Lutetium
 Reactions: Manganese
 Reactions: Neodymium
 Reactions: Nickel
 Reactions: Potassium
 Reactions: Praseodymium
 Reactions: Promethium
 Reactions: Samarium
 Reactions: Scandium
 Reactions: Strontium
 Reactions: Terbium
 Reactions: Thulium
 Reactions: Ytterbium
 Reactions: Yttrium
 Reactions: Zinc
 
aquatic (5)
 Compounds: Sodium
 Data1: Arsenic
 Data1: Cadmium
 Data1: Chlorine
 Data1: Mercury
 
aqueous (19)
 Compounds: Potassium
 Compounds: Zinc
 Data2: Bromine
 Glossary: Base
 Glossary: pH
 On This Day... 22 April
 Production: Thorium
 Reactions: Bromine
 Reactions: Cadmium
 Reactions: Chlorine
 Reactions: Fluorine
 Reactions: Gallium
 Reactions: Gold
 Reactions: Indium
 Reactions: Iodine
 Reactions: Silicon
 Reactions: Sulfur
 Reactions: Titanium
 Reactions: Zinc
 
aquesous (1)
 Reactions: Beryllium
 
ar (44)
 Atomic data: Argon
 Atomic data: Arsenic
 Atomic data: Bromine
 Atomic data: Calcium
 Atomic data: Chromium
 Atomic data: Cobalt
 Atomic data: Copper
 Atomic data: Gallium
 Atomic data: Germanium
 Atomic data: Iron
 Atomic data: Krypton
 Atomic data: Manganese
 Atomic data: Nickel
 Atomic data: Potassium
 Atomic data: Rubidium
 Atomic data: Scandium
 Atomic data: Selenium
 Atomic data: Titanium
 Atomic data: Vanadium
 Atomic data: Zinc
 Data1: Argon
 Data2: Arsenic
 Data2: Bromine
 Data2: Calcium
 Data2: Chromium
 Data2: Cobalt
 Data2: Copper
 Data2: Gallium
 Data2: Germanium
 Data2: Iron
 Data2: Krypton
 Data2: Manganese
 Data2: Nickel
 Data2: Potassium
 Data2: Scandium
 Data2: Selenium
 Data2: Titanium
 Data2: Vanadium
 Data2: Zinc
 Isotope: Argon
 Isotope: Arsenic
 Isotope: Chlorine
 Isotope: Potassium
 Spectrum: Argon
 
ar+ (1)
 Atomic data: Argon
 
ar0 (1)
 Data2: Argon
 
ar2o3 (1)
 Compounds: Arsenic
 
arab (1)
 Country: United Arab Emirates
 
arabia (1)
 Country: Saudi Arabia
 
arabic (2)
 Glossary: Group
 Glossary: Oxidation State
 
arax (1)
 Country: Brazil
 
araxa (1)
 Production: Niobium
 
arbitrarily (1)
 Glossary: The Pauling Scale
 
arbitrary (1)
 Glossary: pH
 
arc (9)
 Allotrope: Carbon
 Biography: Robert Wilhelm Bunsen
 Biography: Sir Humphry Davy
 Data1: Cerium
 Data1: Phosphorus
 Data1: Praseodymium
 Data1: Samarium
 Glossary: Noble Gasses (inert gasses)
 Production: Ruthenium
 
archaeological (2)
 Data1: Copper
 Isotope: Strontium
 
architect (1)
 Allotrope: Carbon
 
architectural (1)
 Compounds: Indium
 
architecture (1)
 Biography: Jöns Jacob Berzelius
 
arctic (2)
 Data1: Scandium
 Production: Carbon
 
arcueil (2)
 Biography: Joseph Louis Gay-Lussac
 Biography: Louis Jacques Thenard
 
area (21)
 Biography: Robert Wilhelm Bunsen
 Compounds: Silver
 Compounds: Tin
 Country: Bolivia
 Country: Canada
 Country: Outer space
 Data1: Fluorine
 Data1: Germanium
 Data1: Helium
 Data1: Iodine
 Data1: Magnesium
 Data1: Radium
 Data1: Rhodium
 Data1: Ruthenium
 Isotope: Helium
 Isotope: Iridium
 Production: Fluorine
 Production: Radium
 Production: Rhodium
 Production: Sulfur
 Production: Technetium
 
areas (10)
 Biography: Robert Wilhelm Bunsen
 Compounds: Ruthenium
 Compounds: Samarium
 Compounds: Titanium
 Compounds: Zinc
 Data1: Barium
 Data1: Copper
 Data1: Gold
 Production: Nickel
 Production: Radon
 
arf2 (1)
 Compounds: Argon
 
arfvedson (3)
 Biography: Johann August Arfvedson
 Data1: Lithium
 On This Day... 12 January
 
arfwedson (1)
 Data1: Lithium
 
argent (1)
 Names: Silver
 
argentina (3)
 Country: Argentina
 Production: Gold
 Production: Lithium
 
argentite (2)
 Data1: Silver
 Production: Silver
 
argento (1)
 Names: Silver
 
argentum (2)
 Data1: Silver
 Names: Silver
 
argo (1)
 Names: Argon
 
argon (21)
 Atomic data: Argon
 Biography: John William Strutt Rayleigh
 Biography: Morris Travers
 Biography: Sir William Ramsay
 Compounds: Argon
 Compounds: Oxygen
 Country: Outer space
 Data1: Argon
 Data1: Helium
 Data2: Argon
 Document: Abundance of the Elements in the Solar System
 Document: The Noble Gases (Group 18)
 Glossary: Noble Gasses (inert gasses)
 Glossary: Pyrophoric
 Isotope: Argon
 MAC data: Argon
 Names: Argon
 Production: Argon
 Production: Ruthenium
 Reactions: Argon
 Spectrum: Argon
 
argonio (1)
 Names: Argon
 
argonne (4)
 Data1: Americium
 Data1: Curium
 Data1: Einsteinium
 Data1: Fermium
 
argos (1)
 Data1: Argon
 
arguing (1)
 Biography: Walter Noddack
 
argument (1)
 Data1: Iodine
 
arguments (1)
 Data1: Terbium
 
arguros (1)
 Data1: Zinc
 
argyrodite (3)
 Biography: Clemens Alexander Winkler
 Data1: Germanium
 Production: Germanium
 
argyros (1)
 Data1: Mercury
 
arhombohedric (1)
 Allotrope: Arsenic
 
aring (1)
 Country: Outer space
 
arise (1)
 Glossary: Shear Modulus
 
arises (4)
 Glossary: Double Beta Decay
 Glossary: pH
 Glossary: Rare Earth Elements
 Glossary: Temperature
 
aristarchus (2)
 Country: Outer space
 Production: Sulfur
 
aristid (2)
 Data1: Protactinium
 On This Day... 4 January
 
aristocratic (1)
 Biography: Antoine-Laurent de Lavoisier
 
aristotelianism (1)
 Biography: Julius Caesar Scaliger
 
aristotle (1)
 Biography: Julius Caesar Scaliger
 
arizona (2)
 Allotrope: Carbon
 Production: Uranium
 
arkansas (4)
 Country: United States of America
 Data1: Carbon
 Production: Bromine
 Production: Carbon
 
arkel (4)
 Data1: Hafnium
 Data1: Thorium
 Data1: Titanium
 Data1: Zirconium
 
arkr+ (1)
 Compounds: Krypton
 
arkwright (1)
 On This Day... 3 January
 
arm (1)
 Data1: Antimony
 
armbruster (8)
 Biography: Gottfried Münzenberg
 Biography: Peter Armbruster
 Data1: Bohrium
 Data1: Darmstadtium
 Data1: Hassium
 Data1: Meitnerium
 Data1: Roentgenium
 On This Day... 25 July
 
armenia (1)
 Country: Armenia
 
armour (4)
 Compounds: Titanium
 Data1: Titanium
 Data1: Uranium
 Document: The Actinoid Series
 
arms (1)
 Data1: Arsenic
 
armstrong (1)
 On This Day... 20 July
 
army (3)
 Biography: Carl Gustav Mosander
 Biography: Emilio Gino Segre
 Biography: Lise Meitner
 
arnoul (1)
 Biography: Julius Caesar Scaliger
 
aromatic (2)
 Data1: Bromine
 Glossary: Aromatic
 
arond (1)
 Data1: Palladium
 
around (269)
 Allotrope: Carbon
 Biography: Albert Ghiorso
 Biography: Arthur Jeffrey Dempster
 Biography: Hans Christian Oersted
 Biography: Ida Eva Tacke Noddack
 Biography: Robert Wilhelm Bunsen
 Compounds: Calcium
 Compounds: Carbon
 Compounds: Lead
 Compounds: Zirconium
 Country: Algeria
 Country: Argentina
 Country: Australia
 Country: Bolivia
 Country: Botswana
 Country: Brazil
 Country: Bulgaria
 Country: Canada
 Country: Chile
 Country: China
 Country: Colombia
 Country: Democratic People's Republic of Korea
 Country: Democratic Republic of Congo
 Country: Egypt
 Country: Finland
 Country: France
 Country: Gambia
 Country: Germany
 Country: India
 Country: Indonesia
 Country: Ireland
 Country: Japan
 Country: Kazakhstan
 Country: Kenya
 Country: Kyrgyzstan
 Country: Madagascar
 Country: Malaysia
 Country: Mexico
 Country: Mongolia
 Country: Morocco
 Country: Mozambique
 Country: Namibia
 Country: Netherlands
 Country: Niger
 Country: Norway
 Country: Pakistan
 Country: Peru
 Country: Qatar
 Country: Republic of Korea
 Country: Romania
 Country: Russia
 Country: South Africa
 Country: Spain
 Country: Sweden
 Country: Tajikistan
 Country: Thailand
 Country: Turkey
 Country: Turkmenistan
 Country: Uganda
 Country: Ukraine
 Country: United Kingdom
 Country: United States of America
 Country: Uzbekistan
 Country: Vietnam
 Country: Zambia
 Data1: Aluminium
 Data1: Antimony
 Data1: Barium
 Data1: Beryllium
 Data1: Bismuth
 Data1: Bohrium
 Data1: Boron
 Data1: Bromine
 Data1: Cadmium
 Data1: Caesium
 Data1: Calcium
 Data1: Cerium
 Data1: Cobalt
 Data1: Copper
 Data1: Dysprosium
 Data1: Einsteinium
 Data1: Erbium
 Data1: Europium
 Data1: Gadolinium
 Data1: Gallium
 Data1: Gold
 Data1: Helium
 Data1: Holmium
 Data1: Hydrogen
 Data1: Indium
 Data1: Iodine
 Data1: Iridium
 Data1: Iron
 Data1: Krypton
 Data1: Lanthanum
 Data1: Lead
 Data1: Lithium
 Data1: Lutetium
 Data1: Magnesium
 Data1: Manganese
 Data1: Mercury
 Data1: Molybdenum
 Data1: Neodymium
 Data1: Niobium
 Data1: Nitrogen
 Data1: Oxygen
 Data1: Platinum
 Data1: Plutonium
 Data1: Potassium
 Data1: Praseodymium
 Data1: Radium
 Data1: Radon
 Data1: Rhenium
 Data1: Rhodium
 Data1: Samarium
 Data1: Selenium
 Data1: Silicon
 Data1: Silver
 Data1: Sodium
 Data1: Strontium
 Data1: Sulfur
 Data1: Tantalum
 Data1: Tellurium
 Data1: Terbium
 Data1: Thallium
 Data1: Thorium
 Data1: Thulium
 Data1: Tin
 Data1: Titanium
 Data1: Tungsten
 Data1: Uranium
 Data1: Vanadium
 Data1: Ytterbium
 Data1: Yttrium
 Data1: Zinc
 Data1: Zirconium
 Document: The Alkali (Group 1) Metals
 Glossary: Atom
 Glossary: Poisson Ratio
 Isotope: Ununbium
 Isotope: Ununoctium
 Names: Actinium
 Names: Aluminium
 Names: Americium
 Names: Antimony
 Names: Argon
 Names: Arsenic
 Names: Astatine
 Names: Barium
 Names: Berkelium
 Names: Beryllium
 Names: Bismuth
 Names: Bohrium
 Names: Boron
 Names: Bromine
 Names: Cadmium
 Names: Caesium
 Names: Calcium
 Names: Californium
 Names: Carbon
 Names: Cerium
 Names: Chlorine
 Names: Chromium
 Names: Cobalt
 Names: Copper
 Names: Curium
 Names: Darmstadtium
 Names: Dubnium
 Names: Dysprosium
 Names: Einsteinium
 Names: Erbium
 Names: Europium
 Names: Fermium
 Names: Fluorine
 Names: Francium
 Names: Gadolinium
 Names: Gallium
 Names: Germanium
 Names: Gold
 Names: Hafnium
 Names: Hassium
 Names: Helium
 Names: Holmium
 Names: Hydrogen
 Names: Indium
 Names: Iodine
 Names: Iridium
 Names: Iron
 Names: Krypton
 Names: Lanthanum
 Names: Lawrencium
 Names: Lead
 Names: Lithium
 Names: Lutetium
 Names: Magnesium
 Names: Manganese
 Names: Meitnerium
 Names: Mendelevium
 Names: Mercury
 Names: Molybdenum
 Names: Neodymium
 Names: Neon
 Names: Neptunium
 Names: Nickel
 Names: Niobium
 Names: Nitrogen
 Names: Nobelium
 Names: Osmium
 Names: Oxygen
 Names: Palladium
 Names: Phosphorus
 Names: Platinum
 Names: Plutonium
 Names: Polonium
 Names: Potassium
 Names: Praseodymium
 Names: Promethium
 Names: Protactinium
 Names: Radium
 Names: Radon
 Names: Rhenium
 Names: Rhodium
 Names: Roentgenium
 Names: Rubidium
 Names: Ruthenium
 Names: Rutherfordium
 Names: Samarium
 Names: Scandium
 Names: Seaborgium
 Names: Selenium
 Names: Silicon
 Names: Silver
 Names: Sodium
 Names: Strontium
 Names: Sulfur
 Names: Tantalum
 Names: Technetium
 Names: Tellurium
 Names: Terbium
 Names: Thallium
 Names: Thorium
 Names: Thulium
 Names: Tin
 Names: Titanium
 Names: Tungsten
 Names: Ununbium
 Names: Ununhexium
 Names: Ununoctium
 Names: Ununpentium
 Names: Ununquadium
 Names: Ununseptium
 Names: Ununtrium
 Names: Uranium
 Names: Vanadium
 Names: Xenon
 Names: Ytterbium
 Names: Yttrium
 Names: Zinc
 Names: Zirconium
 Production: Aluminium
 Production: Astatine
 Production: Bromine
 Production: Carbon
 Production: Einsteinium
 Production: Europium
 Production: Holmium
 Production: Neptunium
 Production: Potassium
 Production: Thorium
 
aroused (3)
 Biography: Joseph Priestley
 Data1: Indium
 Glossary: X-Rays
 
arranged (6)
 Document: Understanding Electron Configuration Tables
 Glossary: Allotrope
 Glossary: Group
 Glossary: Magic Number
 Glossary: Periodic Law
 Isotope: Helium
 
arrangement (4)
 Biography: Irene Joliot-Curie
 Biography: Sir William Crookes
 Glossary: Amorphous
 Glossary: Periodic Table
 
arrangements (1)
 Glossary: Allotrope
 
array (2)
 Biography: Robert Wilhelm Bunsen
 Compounds: Silver
 
arrays (1)
 Compounds: Zinc
 
arrest (1)
 Data1: Fluorine
 
arrested (1)
 Biography: Joseph Louis Gay-Lussac
 
arrestors (1)
 Data1: Neon
 
arrhenius (2)
 Biography: Per Teodor Cleve
 On This Day... 27 January
 
arrival (1)
 Biography: Julius Caesar Scaliger
 
arrive (2)
 Biography: Jöns Jacob Berzelius
 Data1: Gold
 
arrived (3)
 Biography: John Dalton
 Biography: Joseph W. Kennedy
 Data1: Europium
 
arriving (1)
 Biography: Julius Caesar Scaliger
 
arrogance (1)
 Biography: Julius Caesar Scaliger
 
arrogant (1)
 Biography: Julius Caesar Scaliger
 
arseen (1)
 Names: Arsenic
 
arsen (1)
 Names: Arsenic
 
arsenate (4)
 Allotrope: Arsenic
 Compounds: Copper
 Compounds: Sodium
 Production: Arsenic
 
arsenates (1)
 On This Day... 9 October
 
arsenic (45)
 Allotrope: Arsenic
 Atomic data: Arsenic
 Biography: Johann Schroder
 Biography: Louis Jacques Thenard
 Biography: Robert Wilhelm Bunsen
 Compounds: Arsenic
 Compounds: Oxygen
 Compounds: Sodium
 Country: Belgium
 Country: Bolivia
 Country: Canada
 Country: Chile
 Country: China
 Country: France
 Country: Iran
 Country: Japan
 Country: Kazakhstan
 Country: Mexico
 Country: Morocco
 Country: Peru
 Country: Portugal
 Country: Russia
 Data1: Antimony
 Data1: Arsenic
 Data1: Cobalt
 Data1: Copper
 Data1: Lead
 Data1: Selenium
 Data1: Thallium
 Data2: Arsenic
 Data2: Platinum
 Document: Abundance of the Elements in the Solar System
 Document: Chemical makeup of the human body
 Glossary: Carcinogen
 Isotope: Arsenic
 MAC data: Arsenic
 Names: Arsenic
 On This Day... 15 November
 Production: Arsenic
 Production: Silver
 Production: Thallium
 Production: Uranium
 Production: Zinc
 Reactions: Arsenic
 Spectrum: Arsenic
 
arsenical (1)
 Data1: Arsenic
 
arsenico (1)
 Names: Arsenic
 
arsenicum (2)
 Data1: Arsenic
 Names: Arsenic
 
arsenide (8)
 Compounds: Arsenic
 Compounds: Gallium
 Compounds: Indium
 Compounds: Phosphorus
 Country: Canada
 Data1: Arsenic
 Glossary: Semiconductor
 Production: Platinum
 
arsenides (1)
 Production: Arsenic
 
arsenik (1)
 Names: Arsenic
 
arsenikos (1)
 Data1: Arsenic
 
arsenious (1)
 Biography: Robert Wilhelm Bunsen
 
arsenite (1)
 Production: Arsenic
 
arsenites (1)
 Production: Arsenic
 
arsenopyrite (2)
 Data1: Arsenic
 Production: Arsenic
 
arsine (1)
 Allotrope: Arsenic
 
art (2)
 Biography: Julius Caesar Scaliger
 Production: Aluminium
 
artefact (1)
 Data1: Antimony
 
arteries (1)
 Data1: Argon
 
arthritis (2)
 Compounds: Gold
 On This Day... 10 August
 
arthur (10)
 Biography: Arthur C. Wahl
 Biography: Arthur Jeffrey Dempster
 Biography: Joseph W. Kennedy
 Isotope: Uranium
 On This Day... 14 August
 On This Day... 15 August
 On This Day... 19 November
 On This Day... 27 June
 On This Day... 7 August
 On This Day... 8 September
 
article (3)
 Biography: Robert Wilhelm Bunsen
 Data1: Gallium
 On This Day... 2 April
 
articles (1)
 Glossary: Group
 
articulated (1)
 On This Day... 26 September
 
artifact (1)
 Data1: Copper
 
artifacts (1)
 Data1: Copper
 
artifice (1)
 Biography: Joseph Louis Gay-Lussac
 
artificial (10)
 Biography: Ferdinand Frederic Henri Moissan
 Biography: Irene Joliot-Curie
 Biography: Robert Wilhelm Bunsen
 Data1: Scandium
 Data1: Technetium
 Data1: Zirconium
 Isotope: Polonium
 On This Day... 19 March
 On This Day... 4 October
 Production: Technetium
 
artificially (5)
 Biography: Emilio Gino Segre
 Data1: Hydrogen
 Data1: Technetium
 On This Day... 4 July
 Production: Technetium
 
artillery (3)
 Biography: Martin Heinrich Klaproth
 Data1: Uranium
 Document: The Actinoid Series
 
artisanal (1)
 Production: Gold
 
artistic (1)
 Compounds: Cobalt
 
arts (2)
 Data1: Platinum
 Data1: Uranium
 
arvedsonite (1)
 Biography: Johann August Arfvedson
 
aryl (1)
 Compounds: Palladium
 
arzen (1)
 Names: Arsenic
 
arzew (2)
 Country: Algeria
 Country: United States of America
 
as+ (1)
 Atomic data: Arsenic
 
as+3 (1)
 Data2: Arsenic
 
as+5 (1)
 Data2: Arsenic
 
as2 (1)
 Allotrope: Arsenic
 
as2o3 (16)
 Allotrope: Arsenic
 Country: Belgium
 Country: Bolivia
 Country: Canada
 Country: Chile
 Country: China
 Country: France
 Country: Japan
 Country: Kazakhstan
 Country: Mexico
 Country: Morocco
 Country: Peru
 Country: Portugal
 Country: Russia
 Production: Arsenic
 Reactions: Arsenic
 
as2s3 (2)
 Country: Iran
 Production: Arsenic
 
as4 (1)
 Allotrope: Arsenic
 
as4o10 (1)
 Reactions: Arsenic
 
as4o6 (2)
 Data1: Cobalt
 Reactions: Arsenic
 
as4s4 (2)
 Country: Iran
 Production: Arsenic
 
as6 (1)
 Allotrope: Arsenic
 
asbestos (2)
 Data1: Silicon
 Production: Silicon
 
asbr3 (1)
 Reactions: Arsenic
 
ascending (1)
 Data1: Nitrogen
 
ascent (1)
 Biography: Pierre Jules César Janssen
 
ascertained (2)
 Biography: Julius Caesar Scaliger
 Data1: Tungsten
 
ascl3 (1)
 Reactions: Arsenic
 
ascorbic (4)
 Compounds: Chlorine
 Glossary: Acid
 On This Day... 16 September
 On This Day... 19 March
 
asf3 (1)
 Reactions: Arsenic
 
asf5 (1)
 Reactions: Arsenic
 
ash (6)
 Data1: Iodine
 Data1: Potassium
 Data1: Sodium
 Data1: Titanium
 Production: Titanium
 Production: Uranium
 
ash3 (2)
 Allotrope: Arsenic
 Reactions: Arsenic
 
ashes (1)
 Biography: Bernard Courtois
 
ashore (1)
 Biography: Bernard Courtois
 
asi3 (1)
 Reactions: Arsenic
 
asia (2)
 Data1: Magnesium
 Production: Sulfur
 
asian (1)
 Country: United Kingdom
 
aside (1)
 Data1: Cerium
 
asimov (1)
 Production: Astatine
 
ask (2)
 Biography: Jöns Jacob Berzelius
 Biography: Joseph Louis Gay-Lussac
 
asked (4)
 Biography: Bernard Courtois
 Biography: Clemens Alexander Winkler
 Biography: Ferdinand Reich
 Biography: Michael Faraday
 
asking (1)
 On This Day... 22 February
 
aso+ (1)
 Reactions: Arsenic
 
aso33 (1)
 Production: Arsenic
 
aso4 (2)
 Compounds: Copper
 Production: Arsenic
 
aso43 (2)
 Production: Arsenic
 Reactions: Arsenic
 
asparagine (2)
 Biography: Louis Nicolas Vauquelin
 On This Day... 13 January
 
asparagus (1)
 Biography: Louis Nicolas Vauquelin
 
aspartame (1)
 Compounds: Chlorine
 
aspects (1)
 Biography: Hans Christian Oersted
 
asphyxiant (1)
 Data1: Helium
 
asphyxiation (4)
 Compounds: Carbon
 Data1: Argon
 Data1: Helium
 Data1: Nitrogen
 
aspirin (1)
 On This Day... 10 August
 
assayer (1)
 Biography: Louis Nicolas Vauquelin
 
assaying (1)
 Production: Gold
 
assemblies (1)
 Glossary: Abundance
 
assembly (1)
 Allotrope: Carbon
 
assertion (1)
 Biography: Friedrich Wöhler
 
assessment (1)
 Production: Gold
 
assign (1)
 Biography: Robert Wilhelm Bunsen
 
assigned (3)
 Data1: Francium
 Data1: Nobelium
 Glossary: The Pauling Scale
 
assignment (1)
 Data1: Lawrencium
 
assigns (1)
 Glossary: CAS
 
assist (2)
 Compounds: Oxygen
 Production: Hydrogen
 
assistant (13)
 Biography: Andre Louis Debierne
 Biography: Carl Gustav Mosander
 Biography: Dale R. Corson
 Biography: Emilio Gino Segre
 Biography: Ferdinand Reich
 Biography: Jöns Jacob Berzelius
 Biography: Joseph Louis Gay-Lussac
 Biography: Louis Nicolas Vauquelin
 Biography: Michael Faraday
 Biography: Per Teodor Cleve
 Biography: Pierre Curie
 Biography: Sir Humphry Davy
 On This Day... 20 January
 
assistants (3)
 Biography: Ferdinand Frederic Henri Moissan
 Biography: Louis Jacques Thenard
 Biography: Michael Faraday
 
assisted (2)
 Biography: Irene Joliot-Curie
 Biography: Philip Hauge Abelson
 
assists (1)
 Data1: Potassium
 
associated (25)
 Allotrope: Carbon
 Biography: Glenn Theodore Seaborg
 Biography: John Dalton
 Compounds: Carbon
 Country: Canada
 Country: Outer space
 Data1: Arsenic
 Data1: Copper
 Data1: Hafnium
 Data1: Lead
 Data1: Mercury
 Data1: Nitrogen
 Data1: Radon
 Data1: Selenium
 Data1: Tellurium
 Data1: Xenon
 Glossary: Alpha Decay
 Glossary: Magic Number
 Glossary: Oxidation State
 Glossary: Temperature
 Production: Cadmium
 Production: Lead
 Production: Nickel
 Production: Niobium
 Production: Platinum
 
association (3)
 Data1: Copper
 Data1: Manganese
 Production: Thallium
 
associations (1)
 Production: Lead
 
assumed (8)
 Biography: Antoine-Laurent de Lavoisier
 Biography: John Dalton
 Biography: Walter Noddack
 Data1: Helium
 Data1: Hydrogen
 Data1: Molybdenum
 Data1: Uranium
 Glossary: Magic Number
 
assumptions (1)
 Biography: Jöns Jacob Berzelius
 
astaat (1)
 Names: Astatine
 
astat (1)
 Names: Astatine
 
astate (1)
 Names: Astatine
 
astatine (18)
 Atomic data: Astatine
 Biography: Emilio Gino Segre
 Compounds: Astatine
 Compounds: Francium
 Data1: Astatine
 Data1: Francium
 Data2: Astatine
 Data2: Ununseptium
 Document: The Halogens (Group 17)
 Glossary: Halogens
 Isotope: Astatine
 MAC data: Astatine
 Names: Astatine
 Production: Astatine
 Production: Francium
 Reactions: Astatine
 Reactions: Ununseptium
 Spectrum: Astatine
 
astatium (1)
 Names: Astatine
 
astato (1)
 Names: Astatine
 
astatos (1)
 Data1: Astatine
 
asterism (1)
 Data1: Titanium
 
asteroid (6)
 Biography: John William Strutt Rayleigh
 Biography: Martin Heinrich Klaproth
 Biography: William Hyde Wollaston
 Data1: Cerium
 Data1: Palladium
 Isotope: Helium
 
asteroids (3)
 Country: Outer space
 Data1: Xenon
 Isotope: Aluminium
 
asthma (1)
 Compounds: Sodium
 
astonished (2)
 Biography: Bernard Courtois
 Biography: Julius Caesar Scaliger
 
astonishing (1)
 Biography: Julius Caesar Scaliger
 
astonishingly (1)
 Data1: Radon
 
astringent (1)
 Compounds: Zinc
 
astringents (1)
 Data1: Aluminium
 
astrological (1)
 Data1: Mercury
 
astronauts (1)
 Glossary: Air
 
astronomer (5)
 Biography: Johan Gadolin
 Biography: Pierre Jules César Janssen
 Data1: Helium
 Data1: Platinum
 Data1: Technetium
 
astronomers (2)
 Country: Outer space
 Production: Nitrogen
 
astronomical (3)
 Compounds: Fluorine
 Compounds: Silicon
 Glossary: Cosmogenic isotope
 
astronomy (5)
 Biography: Antoine-Laurent de Lavoisier
 Biography: William Hyde Wollaston
 Compounds: Indium
 Compounds: Silicon
 Compounds: Zinc
 
astrophysical (1)
 Biography: Pierre Jules César Janssen
 
astrophysique (2)
 Data1: Bismuth
 Isotope: Bismuth
 
asymmetric (1)
 On This Day... 3 February
 
at+ (1)
 Atomic data: Astatine
 
at+1 (1)
 Data2: Astatine
 
at+3 (1)
 Data2: Astatine
 
at2 (1)
 Reactions: Astatine
 
atacama (1)
 Production: Gold
 
atalh (1)
 Country: Turkey
 
athabasca (3)
 Country: Canada
 Production: Sulfur
 Production: Uranium
 
athletes (1)
 Data1: Magnesium
 
atilde (1)
 Country: Brazil
 
atlantic (45)
 Data1: Aluminium
 Data1: Arsenic
 Data1: Barium
 Data1: Beryllium
 Data1: Bismuth
 Data1: Cadmium
 Data1: Carbon
 Data1: Cerium
 Data1: Chromium
 Data1: Cobalt
 Data1: Copper
 Data1: Dysprosium
 Data1: Erbium
 Data1: Europium
 Data1: Fluorine
 Data1: Gadolinium
 Data1: Germanium
 Data1: Holmium
 Data1: Iodine
 Data1: Iron
 Data1: Lanthanum
 Data1: Lead
 Data1: Lutetium
 Data1: Manganese
 Data1: Mercury
 Data1: Neodymium
 Data1: Nickel
 Data1: Nitrogen
 Data1: Palladium
 Data1: Phosphorus
 Data1: Platinum
 Data1: Praseodymium
 Data1: Samarium
 Data1: Scandium
 Data1: Selenium
 Data1: Silicon
 Data1: Silver
 Data1: Strontium
 Data1: Tellurium
 Data1: Terbium
 Data1: Thulium
 Data1: Tin
 Data1: Vanadium
 Data1: Ytterbium
 Data1: Zinc
 
atlas (1)
 Biography: Pierre Jules César Janssen
 
atleast (3)
 Production: Copper
 Production: Iron
 Production: Palladium
 
atm (1)
 Equation: Avogadro's law
 
atmophile (1)
 Glossary: Goldschmidt Classification
 
atmosphere (49)
 Allotrope: Oxygen
 Biography: John William Strutt Rayleigh
 Biography: Karl Wilhelm Scheele
 Biography: Pierre Jules César Janssen
 Biography: Sir William Ramsay
 Compounds: Carbon
 Compounds: Nitrogen
 Compounds: Oxygen
 Compounds: Phosphorus
 Compounds: Sulfur
 Country: Outer space
 Data1: Argon
 Data1: Carbon
 Data1: Helium
 Data1: Krypton
 Data1: Lawrencium
 Data1: Neon
 Data1: Niobium
 Data1: Nitrogen
 Data1: Oxygen
 Data1: Radium
 Data1: Radon
 Data1: Rhodium
 Data1: Sodium
 Data1: Xenon
 Document: The Noble Gases (Group 18)
 Glossary: Air
 Glossary: Cosmogenic isotope
 Glossary: Deliquescent
 Glossary: Noble Gasses (inert gasses)
 Glossary: Standard Temperature and Pressure (STP)
 Isotope: Argon
 Isotope: Beryllium
 Isotope: Caesium
 Isotope: Calcium
 Isotope: Chlorine
 Isotope: Helium
 Isotope: Iodine
 On This Day... 24 July
 On This Day... 3 December
 Production: Argon
 Production: Carbon
 Production: Helium
 Production: Krypton
 Production: Neon
 Production: Nitrogen
 Production: Xenon
 Production: Zinc
 Reactions: Osmium
 
atmospheres (12)
 Compounds: Carbon
 Country: Outer space
 Data1: Carbon
 Data1: Helium
 Data1: Nitrogen
 Glossary: Pyrophoric
 Production: Carbon
 Production: Nitrogen
 Reactions: Chlorine
 Reactions: Chromium
 Reactions: Fluorine
 Reactions: Xenon
 
atmospheric (24)
 Allotrope: Arsenic
 Allotrope: Sulfur
 Biography: (Gabriel) Daniel Fahrenheit
 Compounds: Cobalt
 Compounds: Phosphorus
 Compounds: Sulfur
 Compounds: Titanium
 Country: Outer space
 Data1: Phosphorus
 Glossary: Air
 Glossary: Boiling Point
 Glossary: Hygroscopic
 Glossary: Melting Point (freezing point)
 Glossary: Speed of Sound
 Isotope: Chlorine
 Isotope: Hydrogen
 Isotope: Iodine
 On This Day... 28 June
 On This Day... 3 December
 Production: Neon
 Production: Technetium
 Reactions: Iridium
 Reactions: Osmium
 Reactions: Ruthenium
 
atom (62)
 Allotrope: Carbon
 Biography: Andre Louis Debierne
 Biography: Arthur Jeffrey Dempster
 Biography: Jean Charles Galissard de Marignac
 Biography: John Dalton
 Biography: Peter Armbruster
 Biography: Philip Hauge Abelson
 Compounds: Iodine
 Compounds: Nitrogen
 Data1: Caesium
 Data1: Carbon
 Data1: Mendelevium
 Data1: Radon
 Data1: Tellurium
 Data1: Ununbium
 Data1: Ununhexium
 Data1: Ununquadium
 Document: The Noble Gases (Group 18)
 Document: Understanding Electron Configuration Tables
 Glossary:
 Glossary: Alkali Metal
 Glossary: Allotrope
 Glossary: Alpha Decay
 Glossary: Atom
 Glossary: Atomic Charge
 Glossary: Atomic Mass
 Glossary: Atomic Number (Z)
 Glossary: Cosmogenic isotope
 Glossary: Electron
 Glossary: Electron Capture
 Glossary: Electron Volt
 Glossary: Electronegativity
 Glossary: Emission Spectrum
 Glossary: Energy Levels
 Glossary: Gamma Ray
 Glossary: Half Life
 Glossary: Ion
 Glossary: Ionization energy
 Glossary: Ionization Potential
 Glossary: Isometric Transition
 Glossary: Isotope
 Glossary: Mole
 Glossary: Molecule
 Glossary: Noble Gasses (inert gasses)
 Glossary: Nucleus
 Glossary: Orbital
 Glossary: Oxidation State
 Glossary: Plasma
 Glossary: Temperature
 Isotope: Helium
 On This Day... 14 March
 On This Day... 19 February
 On This Day... 24 February
 On This Day... 29 August
 On This Day... 5 September
 On This Day... 7 October
 Production: Astatine
 Production: Francium
 Production: Mendelevium
 Production: Neptunium
 Production: Plutonium
 Production: Radon
 
atomic (1372)
 Allotrope: Arsenic
 Allotrope: Boron
 Allotrope: Carbon
 Allotrope: Oxygen
 Allotrope: Phosphorus
 Allotrope: Plutonium
 Allotrope: Selenium
 Allotrope: Sulfur
 Allotrope: Tin
 Allotrope: Uranium
 Allotrope: Ytterbium
 Atomic data: Actinium
 Atomic data: Aluminium
 Atomic data: Americium
 Atomic data: Antimony
 Atomic data: Argon
 Atomic data: Arsenic
 Atomic data: Astatine
 Atomic data: Barium
 Atomic data: Berkelium
 Atomic data: Beryllium
 Atomic data: Bismuth
 Atomic data: Bohrium
 Atomic data: Boron
 Atomic data: Bromine
 Atomic data: Cadmium
 Atomic data: Caesium
 Atomic data: Calcium
 Atomic data: Californium
 Atomic data: Carbon
 Atomic data: Cerium
 Atomic data: Chlorine
 Atomic data: Chromium
 Atomic data: Cobalt
 Atomic data: Copper
 Atomic data: Curium
 Atomic data: Darmstadtium
 Atomic data: Dubnium
 Atomic data: Dysprosium
 Atomic data: Einsteinium
 Atomic data: Erbium
 Atomic data: Europium
 Atomic data: Fermium
 Atomic data: Fluorine
 Atomic data: Francium
 Atomic data: Gadolinium
 Atomic data: Gallium
 Atomic data: Germanium
 Atomic data: Gold
 Atomic data: Hafnium
 Atomic data: Hassium
 Atomic data: Helium
 Atomic data: Holmium
 Atomic data: Hydrogen
 Atomic data: Indium
 Atomic data: Iodine
 Atomic data: Iridium
 Atomic data: Iron
 Atomic data: Krypton
 Atomic data: Lanthanum
 Atomic data: Lawrencium
 Atomic data: Lead
 Atomic data: Lithium
 Atomic data: Lutetium
 Atomic data: Magnesium
 Atomic data: Manganese
 Atomic data: Meitnerium
 Atomic data: Mendelevium
 Atomic data: Mercury
 Atomic data: Molybdenum
 Atomic data: Neodymium
 Atomic data: Neon
 Atomic data: Neptunium
 Atomic data: Nickel
 Atomic data: Niobium
 Atomic data: Nitrogen
 Atomic data: Nobelium
 Atomic data: Osmium
 Atomic data: Oxygen
 Atomic data: Palladium
 Atomic data: Phosphorus
 Atomic data: Platinum
 Atomic data: Plutonium
 Atomic data: Polonium
 Atomic data: Potassium
 Atomic data: Praseodymium
 Atomic data: Promethium
 Atomic data: Protactinium
 Atomic data: Radium
 Atomic data: Radon
 Atomic data: Rhenium
 Atomic data: Rhodium
 Atomic data: Roentgenium
 Atomic data: Rubidium
 Atomic data: Ruthenium
 Atomic data: Rutherfordium
 Atomic data: Samarium
 Atomic data: Scandium
 Atomic data: Seaborgium
 Atomic data: Selenium
 Atomic data: Silicon
 Atomic data: Silver
 Atomic data: Sodium
 Atomic data: Strontium
 Atomic data: Sulfur
 Atomic data: Tantalum
 Atomic data: Technetium
 Atomic data: Tellurium
 Atomic data: Terbium
 Atomic data: Thallium
 Atomic data: Thorium
 Atomic data: Thulium
 Atomic data: Tin
 Atomic data: Titanium
 Atomic data: Tungsten
 Atomic data: Ununbium
 Atomic data: Ununhexium
 Atomic data: Ununoctium
 Atomic data: Ununpentium
 Atomic data: Ununquadium
 Atomic data: Ununseptium
 Atomic data: Ununtrium
 Atomic data: Uranium
 Atomic data: Vanadium
 Atomic data: Xenon
 Atomic data: Ytterbium
 Atomic data: Yttrium
 Atomic data: Zinc
 Atomic data: Zirconium
 Biography: Dmitriy Ivanovich Mendeleyev
 Biography: Edwin Mattison McMillan
 Biography: Emilio Gino Segre
 Biography: Enrico Fermi
 Biography: Frederick Soddy
 Biography: Glenn Theodore Seaborg
 Biography: Institute for Heavy Ion Research (GSI)
 Biography: Jean Charles Galissard de Marignac
 Biography: John Dalton
 Biography: Jöns Jacob Berzelius
 Biography: Lise Meitner
 Biography: Marguerite Catherine Perey
 Biography: Peter Armbruster
 Biography: Robert Wilhelm Bunsen
 Compounds: Actinium
 Compounds: Aluminium
 Compounds: Americium
 Compounds: Antimony
 Compounds: Argon
 Compounds: Arsenic
 Compounds: Astatine
 Compounds: Barium
 Compounds: Berkelium
 Compounds: Beryllium
 Compounds: Bismuth
 Compounds: Bohrium
 Compounds: Boron
 Compounds: Bromine
 Compounds: Cadmium
 Compounds: Caesium
 Compounds: Calcium
 Compounds: Californium
 Compounds: Carbon
 Compounds: Cerium
 Compounds: Chlorine
 Compounds: Chromium
 Compounds: Cobalt
 Compounds: Copper
 Compounds: Curium
 Compounds: Darmstadtium
 Compounds: Dubnium
 Compounds: Dysprosium
 Compounds: Einsteinium
 Compounds: Erbium
 Compounds: Europium
 Compounds: Fermium
 Compounds: Fluorine
 Compounds: Francium
 Compounds: Gadolinium
 Compounds: Gallium
 Compounds: Germanium
 Compounds: Gold
 Compounds: Hafnium
 Compounds: Hassium
 Compounds: Helium
 Compounds: Holmium
 Compounds: Hydrogen
 Compounds: Indium
 Compounds: Iodine
 Compounds: Iridium
 Compounds: Iron
 Compounds: Krypton
 Compounds: Lanthanum
 Compounds: Lawrencium
 Compounds: Lead
 Compounds: Lithium
 Compounds: Lutetium
 Compounds: Magnesium
 Compounds: Manganese
 Compounds: Meitnerium
 Compounds: Mendelevium
 Compounds: Mercury
 Compounds: Molybdenum
 Compounds: Neodymium
 Compounds: Neon
 Compounds: Neptunium
 Compounds: Nickel
 Compounds: Niobium
 Compounds: Nitrogen
 Compounds: Nobelium
 Compounds: Osmium
 Compounds: Oxygen
 Compounds: Palladium
 Compounds: Phosphorus
 Compounds: Platinum
 Compounds: Plutonium
 Compounds: Polonium
 Compounds: Potassium
 Compounds: Praseodymium
 Compounds: Promethium
 Compounds: Protactinium
 Compounds: Radium
 Compounds: Radon
 Compounds: Rhenium
 Compounds: Rhodium
 Compounds: Roentgenium
 Compounds: Rubidium
 Compounds: Ruthenium
 Compounds: Rutherfordium
 Compounds: Samarium
 Compounds: Scandium
 Compounds: Seaborgium
 Compounds: Selenium
 Compounds: Silicon
 Compounds: Silver
 Compounds: Sodium
 Compounds: Strontium
 Compounds: Sulfur
 Compounds: Tantalum
 Compounds: Technetium
 Compounds: Tellurium
 Compounds: Terbium
 Compounds: Thallium
 Compounds: Thorium
 Compounds: Thulium
 Compounds: Tin
 Compounds: Titanium
 Compounds: Tungsten
 Compounds: Ununbium
 Compounds: Ununhexium
 Compounds: Ununoctium
 Compounds: Ununpentium
 Compounds: Ununquadium
 Compounds: Ununseptium
 Compounds: Ununtrium
 Compounds: Uranium
 Compounds: Vanadium
 Compounds: Xenon
 Compounds: Ytterbium
 Compounds: Yttrium
 Compounds: Zinc
 Compounds: Zirconium
 Country: Outer space
 Country: United Kingdom
 Data1: Actinium
 Data1: Aluminium
 Data1: Americium
 Data1: Antimony
 Data1: Argon
 Data1: Arsenic
 Data1: Astatine
 Data1: Barium
 Data1: Berkelium
 Data1: Beryllium
 Data1: Bismuth
 Data1: Bohrium
 Data1: Boron
 Data1: Bromine
 Data1: Cadmium
 Data1: Caesium
 Data1: Calcium
 Data1: Californium
 Data1: Carbon
 Data1: Cerium
 Data1: Chlorine
 Data1: Chromium
 Data1: Cobalt
 Data1: Copper
 Data1: Curium
 Data1: Darmstadtium
 Data1: Dubnium
 Data1: Dysprosium
 Data1: Einsteinium
 Data1: Erbium
 Data1: Europium
 Data1: Fermium
 Data1: Fluorine
 Data1: Francium
 Data1: Gadolinium
 Data1: Gallium
 Data1: Germanium
 Data1: Gold
 Data1: Hafnium
 Data1: Hassium
 Data1: Helium
 Data1: Holmium
 Data1: Hydrogen
 Data1: Indium
 Data1: Iodine
 Data1: Iridium
 Data1: Iron
 Data1: Krypton
 Data1: Lanthanum
 Data1: Lawrencium
 Data1: Lead
 Data1: Lithium
 Data1: Lutetium
 Data1: Magnesium
 Data1: Manganese
 Data1: Meitnerium
 Data1: Mendelevium
 Data1: Mercury
 Data1: Molybdenum
 Data1: Neodymium
 Data1: Neon
 Data1: Neptunium
 Data1: Nickel
 Data1: Niobium
 Data1: Nitrogen
 Data1: Nobelium
 Data1: Osmium
 Data1: Oxygen
 Data1: Palladium
 Data1: Phosphorus
 Data1: Platinum
 Data1: Plutonium
 Data1: Polonium
 Data1: Potassium
 Data1: Praseodymium
 Data1: Promethium
 Data1: Protactinium
 Data1: Radium
 Data1: Radon
 Data1: Rhenium
 Data1: Rhodium
 Data1: Roentgenium
 Data1: Rubidium
 Data1: Ruthenium
 Data1: Rutherfordium
 Data1: Samarium
 Data1: Scandium
 Data1: Seaborgium
 Data1: Selenium
 Data1: Silicon
 Data1: Silver
 Data1: Sodium
 Data1: Strontium
 Data1: Sulfur
 Data1: Tantalum
 Data1: Technetium
 Data1: Tellurium
 Data1: Terbium
 Data1: Thallium
 Data1: Thorium
 Data1: Thulium
 Data1: Tin
 Data1: Titanium
 Data1: Tungsten
 Data1: Ununbium
 Data1: Ununhexium
 Data1: Ununoctium
 Data1: Ununpentium
 Data1: Ununquadium
 Data1: Ununseptium
 Data1: Ununtrium
 Data1: Uranium
 Data1: Vanadium
 Data1: Xenon
 Data1: Ytterbium
 Data1: Yttrium
 Data1: Zinc
 Data1: Zirconium
 Data2: Actinium
 Data2: Aluminium
 Data2: Americium
 Data2: Antimony
 Data2: Argon
 Data2: Arsenic
 Data2: Astatine
 Data2: Barium
 Data2: Berkelium
 Data2: Beryllium
 Data2: Bismuth
 Data2: Bohrium
 Data2: Boron
 Data2: Bromine
 Data2: Cadmium
 Data2: Caesium
 Data2: Calcium
 Data2: Californium
 Data2: Carbon
 Data2: Cerium
 Data2: Chlorine
 Data2: Chromium
 Data2: Cobalt
 Data2: Copper
 Data2: Curium
 Data2: Darmstadtium
 Data2: Dubnium
 Data2: Dysprosium
 Data2: Einsteinium
 Data2: Erbium
 Data2: Europium
 Data2: Fermium
 Data2: Fluorine
 Data2: Francium
 Data2: Gadolinium
 Data2: Gallium
 Data2: Germanium
 Data2: Gold
 Data2: Hafnium
 Data2: Hassium
 Data2: Helium
 Data2: Holmium
 Data2: Hydrogen
 Data2: Indium
 Data2: Iodine
 Data2: Iridium
 Data2: Iron
 Data2: Krypton
 Data2: Lanthanum
 Data2: Lawrencium
 Data2: Lead
 Data2: Lithium
 Data2: Lutetium
 Data2: Magnesium
 Data2: Manganese
 Data2: Meitnerium
 Data2: Mendelevium
 Data2: Mercury
 Data2: Molybdenum
 Data2: Neodymium
 Data2: Neon
 Data2: Neptunium
 Data2: Nickel
 Data2: Niobium
 Data2: Nitrogen
 Data2: Nobelium
 Data2: Osmium
 Data2: Oxygen
 Data2: Palladium
 Data2: Phosphorus
 Data2: Platinum
 Data2: Plutonium
 Data2: Polonium
 Data2: Potassium
 Data2: Praseodymium
 Data2: Promethium
 Data2: Protactinium
 Data2: Radium
 Data2: Radon
 Data2: Rhenium
 Data2: Rhodium
 Data2: Roentgenium
 Data2: Rubidium
 Data2: Ruthenium
 Data2: Rutherfordium
 Data2: Samarium
 Data2: Scandium
 Data2: Seaborgium
 Data2: Selenium
 Data2: Silicon
 Data2: Silver
 Data2: Sodium
 Data2: Strontium
 Data2: Sulfur
 Data2: Tantalum
 Data2: Technetium
 Data2: Tellurium
 Data2: Terbium
 Data2: Thallium
 Data2: Thorium
 Data2: Thulium
 Data2: Tin
 Data2: Titanium
 Data2: Tungsten
 Data2: Ununbium
 Data2: Ununhexium
 Data2: Ununoctium
 Data2: Ununpentium
 Data2: Ununquadium
 Data2: Ununseptium
 Data2: Ununtrium
 Data2: Uranium
 Data2: Vanadium
 Data2: Xenon
 Data2: Ytterbium
 Data2: Yttrium
 Data2: Zinc
 Data2: Zirconium
 Document: The Alkali (Group 1) Metals
 Document: The Lanthanoid Series
 Document: The Noble Gases (Group 18)
 Document: The Transition Metals (Groups 3 to 12)
 Glossary: Absorption Spectrum
 Glossary: Abundance
 Glossary: Alkali Metal
 Glossary: Alpha Decay
 Glossary: Anion
 Glossary: Atomic Charge
 Glossary: Atomic Mass
 Glossary: Atomic mass unit (amu, u)
 Glossary: Atomic Number (Z)
 Glossary: Atomic Radius
 Glossary: Cation
 Glossary: Double Beta Decay
 Glossary: Double Electron Capture
 Glossary: Doubly Magic
 Glossary: Electron Capture
 Glossary: Element
 Glossary: Island of Stability
 Glossary: Isotope
 Glossary: Lanthanides (old name)
 Glossary: Lanthanoids
 Glossary: Magic Number
 Glossary: Mass Number (A)
 Glossary: Mole
 Glossary: Neutron
 Glossary: Noble Gasses (inert gasses)
 Glossary: Nucleon
 Glossary: Periodic Law
 Glossary: Proton
 Glossary: Radioactivity
 Glossary: Spontaneous Fission
 Isotope: Actinium
 Isotope: Aluminium
 Isotope: Americium
 Isotope: Antimony
 Isotope: Argon
 Isotope: Arsenic
 Isotope: Astatine
 Isotope: Barium
 Isotope: Berkelium
 Isotope: Beryllium
 Isotope: Bismuth
 Isotope: Bohrium
 Isotope: Boron
 Isotope: Bromine
 Isotope: Cadmium
 Isotope: Caesium
 Isotope: Calcium
 Isotope: Californium
 Isotope: Carbon
 Isotope: Cerium
 Isotope: Chlorine
 Isotope: Chromium
 Isotope: Cobalt
 Isotope: Copper
 Isotope: Curium
 Isotope: Darmstadtium
 Isotope: Dubnium
 Isotope: Dysprosium
 Isotope: Einsteinium
 Isotope: Erbium
 Isotope: Europium
 Isotope: Fermium
 Isotope: Fluorine
 Isotope: Francium
 Isotope: Gadolinium
 Isotope: Gallium
 Isotope: Germanium
 Isotope: Gold
 Isotope: Hafnium
 Isotope: Hassium
 Isotope: Helium
 Isotope: Holmium
 Isotope: Hydrogen
 Isotope: Indium
 Isotope: Iodine
 Isotope: Iridium
 Isotope: Iron
 Isotope: Krypton
 Isotope: Lanthanum
 Isotope: Lawrencium
 Isotope: Lead
 Isotope: Lithium
 Isotope: Lutetium
 Isotope: Magnesium
 Isotope: Manganese
 Isotope: Meitnerium
 Isotope: Mendelevium
 Isotope: Mercury
 Isotope: Molybdenum
 Isotope: Neodymium
 Isotope: Neon
 Isotope: Neptunium
 Isotope: Nickel
 Isotope: Niobium
 Isotope: Nitrogen
 Isotope: Nobelium
 Isotope: Osmium
 Isotope: Oxygen
 Isotope: Palladium
 Isotope: Phosphorus
 Isotope: Platinum
 Isotope: Plutonium
 Isotope: Polonium
 Isotope: Potassium
 Isotope: Praseodymium
 Isotope: Promethium
 Isotope: Protactinium
 Isotope: Radium
 Isotope: Radon
 Isotope: Rhenium
 Isotope: Rhodium
 Isotope: Roentgenium
 Isotope: Rubidium
 Isotope: Ruthenium
 Isotope: Rutherfordium
 Isotope: Samarium
 Isotope: Scandium
 Isotope: Seaborgium
 Isotope: Selenium
 Isotope: Silicon
 Isotope: Silver
 Isotope: Sodium
 Isotope: Strontium
 Isotope: Sulfur
 Isotope: Tantalum
 Isotope: Technetium
 Isotope: Tellurium
 Isotope: Terbium
 Isotope: Thallium
 Isotope: Thorium
 Isotope: Thulium
 Isotope: Tin
 Isotope: Titanium
 Isotope: Tungsten
 Isotope: Ununbium
 Isotope: Ununhexium
 Isotope: Ununoctium
 Isotope: Ununpentium
 Isotope: Ununquadium
 Isotope: Ununseptium
 Isotope: Ununtrium
 Isotope: Uranium
 Isotope: Vanadium
 Isotope: Xenon
 Isotope: Ytterbium
 Isotope: Yttrium
 Isotope: Zinc
 Isotope: Zirconium
 MAC data: Actinium
 MAC data: Aluminium
 MAC data: Americium
 MAC data: Antimony
 MAC data: Argon
 MAC data: Arsenic
 MAC data: Astatine
 MAC data: Barium
 MAC data: Berkelium
 MAC data: Beryllium
 MAC data: Bismuth
 MAC data: Bohrium
 MAC data: Boron
 MAC data: Bromine
 MAC data: Cadmium
 MAC data: Caesium
 MAC data: Calcium
 MAC data: Californium
 MAC data: Carbon
 MAC data: Cerium
 MAC data: Chlorine
 MAC data: Chromium
 MAC data: Cobalt
 MAC data: Copper
 MAC data: Curium
 MAC data: Darmstadtium
 MAC data: Dubnium
 MAC data: Dysprosium
 MAC data: Einsteinium
 MAC data: Erbium
 MAC data: Europium
 MAC data: Fermium
 MAC data: Fluorine
 MAC data: Francium
 MAC data: Gadolinium
 MAC data: Gallium
 MAC data: Germanium
 MAC data: Gold
 MAC data: Hafnium
 MAC data: Hassium
 MAC data: Helium
 MAC data: Holmium
 MAC data: Hydrogen
 MAC data: Indium
 MAC data: Iodine
 MAC data: Iridium
 MAC data: Iron
 MAC data: Krypton
 MAC data: Lanthanum
 MAC data: Lawrencium
 MAC data: Lead
 MAC data: Lithium
 MAC data: Lutetium
 MAC data: Magnesium
 MAC data: Manganese
 MAC data: Meitnerium
 MAC data: Mendelevium
 MAC data: Mercury
 MAC data: Molybdenum
 MAC data: Neodymium
 MAC data: Neon
 MAC data: Neptunium
 MAC data: Nickel
 MAC data: Niobium
 MAC data: Nitrogen
 MAC data: Nobelium
 MAC data: Osmium
 MAC data: Oxygen
 MAC data: Palladium
 MAC data: Phosphorus
 MAC data: Platinum
 MAC data: Plutonium
 MAC data: Polonium
 MAC data: Potassium
 MAC data: Praseodymium
 MAC data: Promethium
 MAC data: Protactinium
 MAC data: Radium
 MAC data: Radon
 MAC data: Rhenium
 MAC data: Rhodium
 MAC data: Roentgenium
 MAC data: Rubidium
 MAC data: Ruthenium
 MAC data: Rutherfordium
 MAC data: Samarium
 MAC data: Scandium
 MAC data: Seaborgium
 MAC data: Selenium
 MAC data: Silicon
 MAC data: Silver
 MAC data: Sodium
 MAC data: Strontium
 MAC data: Sulfur
 MAC data: Tantalum
 MAC data: Technetium
 MAC data: Tellurium
 MAC data: Terbium
 MAC data: Thallium
 MAC data: Thorium
 MAC data: Thulium
 MAC data: Tin
 MAC data: Titanium
 MAC data: Tungsten
 MAC data: Ununbium
 MAC data: Ununhexium
 MAC data: Ununoctium
 MAC data: Ununpentium
 MAC data: Ununquadium
 MAC data: Ununseptium
 MAC data: Ununtrium
 MAC data: Uranium
 MAC data: Vanadium
 MAC data: Xenon
 MAC data: Ytterbium
 MAC data: Yttrium
 MAC data: Zinc
 MAC data: Zirconium
 Names: Actinium
 Names: Aluminium
 Names: Americium
 Names: Antimony
 Names: Argon
 Names: Arsenic
 Names: Astatine
 Names: Barium
 Names: Berkelium
 Names: Beryllium
 Names: Bismuth
 Names: Bohrium
 Names: Boron
 Names: Bromine
 Names: Cadmium
 Names: Caesium
 Names: Calcium
 Names: Californium
 Names: Carbon
 Names: Cerium
 Names: Chlorine
 Names: Chromium
 Names: Cobalt
 Names: Copper
 Names: Curium
 Names: Darmstadtium
 Names: Dubnium
 Names: Dysprosium
 Names: Einsteinium
 Names: Erbium
 Names: Europium
 Names: Fermium
 Names: Fluorine
 Names: Francium
 Names: Gadolinium
 Names: Gallium
 Names: Germanium
 Names: Gold
 Names: Hafnium
 Names: Hassium
 Names: Helium
 Names: Holmium
 Names: Hydrogen
 Names: Indium
 Names: Iodine
 Names: Iridium
 Names: Iron
 Names: Krypton
 Names: Lanthanum
 Names: Lawrencium
 Names: Lead
 Names: Lithium
 Names: Lutetium
 Names: Magnesium
 Names: Manganese
 Names: Meitnerium
 Names: Mendelevium
 Names: Mercury
 Names: Molybdenum
 Names: Neodymium
 Names: Neon
 Names: Neptunium
 Names: Nickel
 Names: Niobium
 Names: Nitrogen
 Names: Nobelium
 Names: Osmium
 Names: Oxygen
 Names: Palladium
 Names: Phosphorus
 Names: Platinum
 Names: Plutonium
 Names: Polonium
 Names: Potassium
 Names: Praseodymium
 Names: Promethium
 Names: Protactinium
 Names: Radium
 Names: Radon
 Names: Rhenium
 Names: Rhodium
 Names: Roentgenium
 Names: Rubidium
 Names: Ruthenium
 Names: Rutherfordium
 Names: Samarium
 Names: Scandium
 Names: Seaborgium
 Names: Selenium
 Names: Silicon
 Names: Silver
 Names: Sodium
 Names: Strontium
 Names: Sulfur
 Names: Tantalum
 Names: Technetium
 Names: Tellurium
 Names: Terbium
 Names: Thallium
 Names: Thorium
 Names: Thulium
 Names: Tin
 Names: Titanium
 Names: Tungsten
 Names: Ununbium
 Names: Ununhexium
 Names: Ununoctium
 Names: Ununpentium
 Names: Ununquadium
 Names: Ununseptium
 Names: Ununtrium
 Names: Uranium
 Names: Vanadium
 Names: Xenon
 Names: Ytterbium
 Names: Yttrium
 Names: Zinc
 Names: Zirconium
 On This Day... 1 October
 On This Day... 11 April
 On This Day... 12 February
 On This Day... 16 July
 On This Day... 18 October
 On This Day... 2 December
 On This Day... 2 October
 On This Day... 21 August
 On This Day... 23 September
 On This Day... 30 August
 On This Day... 30 October
 On This Day... 31 January
 On This Day... 7 February
 Production: Actinium
 Production: Aluminium
 Production: Americium
 Production: Antimony
 Production: Argon
 Production: Arsenic
 Production: Astatine
 Production: Barium
 Production: Berkelium
 Production: Beryllium
 Production: Bismuth
 Production: Bohrium
 Production: Boron
 Production: Bromine
 Production: Cadmium
 Production: Caesium
 Production: Calcium
 Production: Californium
 Production: Carbon
 Production: Cerium
 Production: Chlorine
 Production: Chromium
 Production: Cobalt
 Production: Copper
 Production: Curium
 Production: Darmstadtium
 Production: Dubnium
 Production: Dysprosium
 Production: Einsteinium
 Production: Erbium
 Production: Europium
 Production: Fermium
 Production: Fluorine
 Production: Francium
 Production: Gadolinium
 Production: Gallium
 Production: Germanium
 Production: Gold
 Production: Hafnium
 Production: Hassium
 Production: Helium
 Production: Holmium
 Production: Hydrogen
 Production: Indium
 Production: Iodine
 Production: Iridium
 Production: Iron
 Production: Krypton
 Production: Lanthanum
 Production: Lawrencium
 Production: Lead
 Production: Lithium
 Production: Lutetium
 Production: Magnesium
 Production: Manganese
 Production: Meitnerium
 Production: Mendelevium
 Production: Mercury
 Production: Molybdenum
 Production: Neodymium
 Production: Neon
 Production: Neptunium
 Production: Nickel
 Production: Niobium
 Production: Nitrogen
 Production: Nobelium
 Production: Osmium
 Production: Oxygen
 Production: Palladium
 Production: Phosphorus
 Production: Platinum
 Production: Plutonium
 Production: Polonium
 Production: Potassium
 Production: Praseodymium
 Production: Promethium
 Production: Protactinium
 Production: Radium
 Production: Radon
 Production: Rhenium
 Production: Rhodium
 Production: Roentgenium
 Production: Rubidium
 Production: Ruthenium
 Production: Rutherfordium
 Production: Samarium
 Production: Scandium
 Production: Seaborgium
 Production: Selenium
 Production: Silicon
 Production: Silver
 Production: Sodium
 Production: Strontium
 Production: Sulfur
 Production: Tantalum
 Production: Technetium
 Production: Tellurium
 Production: Terbium
 Production: Thallium
 Production: Thorium
 Production: Thulium
 Production: Tin
 Production: Titanium
 Production: Tungsten
 Production: Ununbium
 Production: Ununhexium
 Production: Ununoctium
 Production: Ununpentium
 Production: Ununquadium
 Production: Ununseptium
 Production: Ununtrium
 Production: Uranium
 Production: Vanadium
 Production: Xenon
 Production: Ytterbium
 Production: Yttrium
 Production: Zinc
 Production: Zirconium
 Reactions: Actinium
 Reactions: Aluminium
 Reactions: Americium
 Reactions: Antimony
 Reactions: Argon
 Reactions: Arsenic
 Reactions: Astatine
 Reactions: Barium
 Reactions: Berkelium
 Reactions: Beryllium
 Reactions: Bismuth
 Reactions: Bohrium
 Reactions: Boron
 Reactions: Bromine
 Reactions: Cadmium
 Reactions: Caesium
 Reactions: Calcium
 Reactions: Californium
 Reactions: Carbon
 Reactions: Cerium
 Reactions: Chlorine
 Reactions: Chromium
 Reactions: Cobalt
 Reactions: Copper
 Reactions: Curium
 Reactions: Darmstadtium
 Reactions: Dubnium
 Reactions: Dysprosium
 Reactions: Einsteinium
 Reactions: Erbium
 Reactions: Europium
 Reactions: Fermium
 Reactions: Fluorine
 Reactions: Francium
 Reactions: Gadolinium
 Reactions: Gallium
 Reactions: Germanium
 Reactions: Gold
 Reactions: Hafnium
 Reactions: Hassium
 Reactions: Helium
 Reactions: Holmium
 Reactions: Hydrogen
 Reactions: Indium
 Reactions: Iodine
 Reactions: Iridium
 Reactions: Iron
 Reactions: Krypton
 Reactions: Lanthanum
 Reactions: Lawrencium
 Reactions: Lead
 Reactions: Lithium
 Reactions: Lutetium
 Reactions: Magnesium
 Reactions: Manganese
 Reactions: Meitnerium
 Reactions: Mendelevium
 Reactions: Mercury
 Reactions: Molybdenum
 Reactions: Neodymium
 Reactions: Neon
 Reactions: Neptunium
 Reactions: Nickel
 Reactions: Niobium
 Reactions: Nitrogen
 Reactions: Nobelium
 Reactions: Osmium
 Reactions: Oxygen
 Reactions: Palladium
 Reactions: Phosphorus
 Reactions: Platinum
 Reactions: Plutonium
 Reactions: Polonium
 Reactions: Potassium
 Reactions: Praseodymium
 Reactions: Promethium
 Reactions: Protactinium
 Reactions: Radium
 Reactions: Radon
 Reactions: Rhenium
 Reactions: Rhodium
 Reactions: Roentgenium
 Reactions: Rubidium
 Reactions: Ruthenium
 Reactions: Rutherfordium
 Reactions: Samarium
 Reactions: Scandium
 Reactions: Seaborgium
 Reactions: Selenium
 Reactions: Silicon
 Reactions: Silver
 Reactions: Sodium
 Reactions: Strontium
 Reactions: Sulfur
 Reactions: Tantalum
 Reactions: Technetium
 Reactions: Tellurium
 Reactions: Terbium
 Reactions: Thallium
 Reactions: Thorium
 Reactions: Thulium
 Reactions: Tin
 Reactions: Titanium
 Reactions: Tungsten
 Reactions: Ununbium
 Reactions: Ununhexium
 Reactions: Ununoctium
 Reactions: Ununpentium
 Reactions: Ununquadium
 Reactions: Ununseptium
 Reactions: Ununtrium
 Reactions: Uranium
 Reactions: Vanadium
 Reactions: Xenon
 Reactions: Ytterbium
 Reactions: Yttrium
 Reactions: Zinc
 Reactions: Zirconium
 S1
 S10
 S100
 S101
 S102
 S103
 S104
 S105
 S106
 S107
 S108
 S109
 S11
 S110
 S111
 S112
 S113
 S114
 S115
 S116
 S117
 S118
 S12
 S13
 S14
 S15
 S16
 S17
 S18
 S19
 S2
 S20
 S21
 S22
 S23
 S24
 S25
 S26
 S27
 S28
 S29
 S3
 S30
 S31
 S32
 S33
 S34
 S35
 S36
 S37
 S38
 S39
 S4
 S40
 S41
 S42
 S43
 S44
 S45
 S46
 S47
 S48
 S49
 S5
 S50
 S51
 S52
 S53
 S54
 S55
 S56
 S57
 S58
 S59
 S6
 S60
 S61
 S62
 S63
 S64
 S65
 S66
 S67
 S68
 S69
 S7
 S70
 S71
 S72
 S73
 S74
 S75
 S76
 S77
 S78
 S79
 S8
 S80
 S81
 S82
 S83
 S84
 S85
 S86
 S87
 S88
 S89
 S9
 S90
 S91
 S92
 S93
 S94
 S95
 S96
 S97
 S98
 S99
 Spectrum: Actinium
 Spectrum: Aluminium
 Spectrum: Americium
 Spectrum: Antimony
 Spectrum: Argon
 Spectrum: Arsenic
 Spectrum: Astatine
 Spectrum: Barium
 Spectrum: Berkelium
 Spectrum: Beryllium
 Spectrum: Bismuth
 Spectrum: Bohrium
 Spectrum: Boron
 Spectrum: Bromine
 Spectrum: Cadmium
 Spectrum: Caesium
 Spectrum: Calcium
 Spectrum: Californium
 Spectrum: Carbon
 Spectrum: Cerium
 Spectrum: Chlorine
 Spectrum: Chromium
 Spectrum: Cobalt
 Spectrum: Copper
 Spectrum: Curium
 Spectrum: Darmstadtium
 Spectrum: Dubnium
 Spectrum: Dysprosium
 Spectrum: Einsteinium
 Spectrum: Erbium
 Spectrum: Europium
 Spectrum: Fermium
 Spectrum: Fluorine
 Spectrum: Francium
 Spectrum: Gadolinium
 Spectrum: Gallium
 Spectrum: Germanium
 Spectrum: Gold
 Spectrum: Hafnium
 Spectrum: Hassium
 Spectrum: Helium
 Spectrum: Holmium
 Spectrum: Hydrogen
 Spectrum: Indium
 Spectrum: Iodine
 Spectrum: Iridium
 Spectrum: Iron
 Spectrum: Krypton
 Spectrum: Lanthanum
 Spectrum: Lawrencium
 Spectrum: Lead
 Spectrum: Lithium
 Spectrum: Lutetium
 Spectrum: Magnesium
 Spectrum: Manganese
 Spectrum: Meitnerium
 Spectrum: Mendelevium
 Spectrum: Mercury
 Spectrum: Molybdenum
 Spectrum: Neodymium
 Spectrum: Neon
 Spectrum: Neptunium
 Spectrum: Nickel
 Spectrum: Niobium
 Spectrum: Nitrogen
 Spectrum: Nobelium
 Spectrum: Osmium
 Spectrum: Oxygen
 Spectrum: Palladium
 Spectrum: Phosphorus
 Spectrum: Platinum
 Spectrum: Plutonium
 Spectrum: Polonium
 Spectrum: Potassium
 Spectrum: Praseodymium
 Spectrum: Promethium
 Spectrum: Protactinium
 Spectrum: Radium
 Spectrum: Radon
 Spectrum: Rhenium
 Spectrum: Rhodium
 Spectrum: Roentgenium
 Spectrum: Rubidium
 Spectrum: Ruthenium
 Spectrum: Rutherfordium
 Spectrum: Samarium
 Spectrum: Scandium
 Spectrum: Seaborgium
 Spectrum: Selenium
 Spectrum: Silicon
 Spectrum: Silver
 Spectrum: Sodium
 Spectrum: Strontium
 Spectrum: Sulfur
 Spectrum: Tantalum
 Spectrum: Technetium
 Spectrum: Tellurium
 Spectrum: Terbium
 Spectrum: Thallium
 Spectrum: Thorium
 Spectrum: Thulium
 Spectrum: Tin
 Spectrum: Titanium
 Spectrum: Tungsten
 Spectrum: Ununbium
 Spectrum: Ununhexium
 Spectrum: Ununoctium
 Spectrum: Ununpentium
 Spectrum: Ununquadium
 Spectrum: Ununseptium
 Spectrum: Ununtrium
 Spectrum: Uranium
 Spectrum: Vanadium
 Spectrum: Xenon
 Spectrum: Ytterbium
 Spectrum: Yttrium
 Spectrum: Zinc
 Spectrum: Zirconium
 
atomization (118)
 Data2: Actinium
 Data2: Aluminium
 Data2: Americium
 Data2: Antimony
 Data2: Argon
 Data2: Arsenic
 Data2: Astatine
 Data2: Barium
 Data2: Berkelium
 Data2: Beryllium
 Data2: Bismuth
 Data2: Bohrium
 Data2: Boron
 Data2: Bromine
 Data2: Cadmium
 Data2: Caesium
 Data2: Calcium
 Data2: Californium
 Data2: Carbon
 Data2: Cerium
 Data2: Chlorine
 Data2: Chromium
 Data2: Cobalt
 Data2: Copper
 Data2: Curium
 Data2: Darmstadtium
 Data2: Dubnium
 Data2: Dysprosium
 Data2: Einsteinium
 Data2: Erbium
 Data2: Europium
 Data2: Fermium
 Data2: Fluorine
 Data2: Francium
 Data2: Gadolinium
 Data2: Gallium
 Data2: Germanium
 Data2: Gold
 Data2: Hafnium
 Data2: Hassium
 Data2: Helium
 Data2: Holmium
 Data2: Hydrogen
 Data2: Indium
 Data2: Iodine
 Data2: Iridium
 Data2: Iron
 Data2: Krypton
 Data2: Lanthanum
 Data2: Lawrencium
 Data2: Lead
 Data2: Lithium
 Data2: Lutetium
 Data2: Magnesium
 Data2: Manganese
 Data2: Meitnerium
 Data2: Mendelevium
 Data2: Mercury
 Data2: Molybdenum
 Data2: Neodymium
 Data2: Neon
 Data2: Neptunium
 Data2: Nickel
 Data2: Niobium
 Data2: Nitrogen
 Data2: Nobelium
 Data2: Osmium
 Data2: Oxygen
 Data2: Palladium
 Data2: Phosphorus
 Data2: Platinum
 Data2: Plutonium
 Data2: Polonium
 Data2: Potassium
 Data2: Praseodymium
 Data2: Promethium
 Data2: Protactinium
 Data2: Radium
 Data2: Radon
 Data2: Rhenium
 Data2: Rhodium
 Data2: Roentgenium
 Data2: Rubidium
 Data2: Ruthenium
 Data2: Rutherfordium
 Data2: Samarium
 Data2: Scandium
 Data2: Seaborgium
 Data2: Selenium
 Data2: Silicon
 Data2: Silver
 Data2: Sodium
 Data2: Strontium
 Data2: Sulfur
 Data2: Tantalum
 Data2: Technetium
 Data2: Tellurium
 Data2: Terbium
 Data2: Thallium
 Data2: Thorium
 Data2: Thulium
 Data2: Tin
 Data2: Titanium
 Data2: Tungsten
 Data2: Ununbium
 Data2: Ununhexium
 Data2: Ununoctium
 Data2: Ununpentium
 Data2: Ununquadium
 Data2: Ununseptium
 Data2: Ununtrium
 Data2: Uranium
 Data2: Vanadium
 Data2: Xenon
 Data2: Ytterbium
 Data2: Yttrium
 Data2: Zinc
 Data2: Zirconium
 
atoms (120)
 Allotrope: Carbon
 Allotrope: Selenium
 Allotrope: Sulfur
 Biography: Enrico Fermi
 Biography: John Dalton
 Biography: Philip Hauge Abelson
 Biography: Robert Wilhelm Bunsen
 Compounds: Iodine
 Compounds: Molybdenum
 Compounds: Nitrogen
 Compounds: Silver
 Data1: Aluminium
 Data1: Arsenic
 Data1: Barium
 Data1: Beryllium
 Data1: Boron
 Data1: Bromine
 Data1: Cadmium
 Data1: Caesium
 Data1: Calcium
 Data1: Californium
 Data1: Carbon
 Data1: Chlorine
 Data1: Chromium
 Data1: Cobalt
 Data1: Copper
 Data1: Darmstadtium
 Data1: Dubnium
 Data1: Fluorine
 Data1: Francium
 Data1: Gold
 Data1: Hassium
 Data1: Hydrogen
 Data1: Iodine
 Data1: Iron
 Data1: Lawrencium
 Data1: Lead
 Data1: Lithium
 Data1: Magnesium
 Data1: Manganese
 Data1: Molybdenum
 Data1: Nickel
 Data1: Nitrogen
 Data1: Oxygen
 Data1: Phosphorus
 Data1: Potassium
 Data1: Radium
 Data1: Roentgenium
 Data1: Rubidium
 Data1: Selenium
 Data1: Silicon
 Data1: Sodium
 Data1: Strontium
 Data1: Sulfur
 Data1: Tin
 Data1: Ununbium
 Data1: Ununoctium
 Data1: Ununpentium
 Data1: Ununtrium
 Data1: Uranium
 Data1: Vanadium
 Data1: Zinc
 Data1: Zirconium
 Document: Abundance of the Elements in the Solar System
 Document: The Halogens (Group 17)
 Document: The Noble Gases (Group 18)
 Document: The Transition Metals (Groups 3 to 12)
 Glossary:
 Glossary: Allotrope
 Glossary: Alloy
 Glossary: Alpha Decay
 Glossary: Amorphous
 Glossary: Aromatic
 Glossary: Atom
 Glossary: Atomic Charge
 Glossary: Atomic Radius
 Glossary: Beta Particle
 Glossary: Compound
 Glossary: Double Beta Decay
 Glossary: Double Electron Capture
 Glossary: Electronegativity
 Glossary: Emission Spectrum
 Glossary: Gas
 Glossary: Half Life
 Glossary: Halogens
 Glossary: Ionic bonds
 Glossary: Ionization Potential
 Glossary: Island of Stability
 Glossary: Isotope
 Glossary: Magnetic Ordering
 Glossary: Mole
 Glossary: Molecule
 Glossary: Neutron
 Glossary: Noble Gasses (inert gasses)
 Glossary: Oxidation State
 Glossary: Reduction
 Glossary: Temperature
 Glossary: Thermal Expansion
 Glossary: van der Waals radius
 Glossary: Wavefunction
 Isotope: Helium
 Isotope: Hydrogen
 Isotope: Plutonium
 On This Day... 11 September
 On This Day... 16 January
 On This Day... 19 February
 On This Day... 21 October
 On This Day... 30 April
 On This Day... 7 October
 On This Day... 8 December
 Production: Astatine
 Production: Californium
 Production: Copper
 Production: Darmstadtium
 Production: Francium
 Production: Ununhexium
 Production: Ununoctium
 Production: Ununpentium
 Production: Ununquadium
 Production: Ununtrium
 
atop (1)
 Production: Gold
 
atp (2)
 Data1: Phosphorus
 On This Day... 12 June
 
attack (25)
 Allotrope: Carbon
 Biography: Julius Caesar Scaliger
 Biography: Sir Humphry Davy
 Compounds: Iodine
 Compounds: Oxygen
 Compounds: Sodium
 Data1: Fluorine
 Data1: Tantalum
 Data1: Tin
 Data1: Titanium
 Glossary: Base
 Production: Fluorine
 Reactions: Aluminium
 Reactions: Barium
 Reactions: Beryllium
 Reactions: Calcium
 Reactions: Chromium
 Reactions: Iridium
 Reactions: Magnesium
 Reactions: Niobium
 Reactions: Osmium
 Reactions: Radium
 Reactions: Ruthenium
 Reactions: Strontium
 Reactions: Vanadium
 
attacked (11)
 Data1: Antimony
 Data1: Fluorine
 Data1: Iridium
 Data1: Rhodium
 Data1: Ruthenium
 Data1: Scandium
 Data1: Tin
 Production: Fluorine
 Reactions: Niobium
 Reactions: Silicon
 Reactions: Tantalum
 
attacking (2)
 Document: The Halogens (Group 17)
 Glossary: Halogens
 
attacks (3)
 Data1: Fluorine
 Data1: Lanthanum
 Production: Fluorine
 
attain (1)
 Data1: Niobium
 
attained (1)
 Biography: Ida Eva Tacke Noddack
 
attains (1)
 Compounds: Sodium
 
attempt (2)
 Biography: Julius Caesar Scaliger
 Data1: Technetium
 
attempted (6)
 Data1: Fluorine
 Data1: Francium
 Data1: Magnesium
 Data1: Phosphorus
 Production: Fluorine
 Production: Gold
 
attempting (2)
 Data1: Nickel
 Data1: Phosphorus
 
attempts (6)
 Biography: Pierre Curie
 Biography: Sir Humphry Davy
 Country: Oceans / Seas
 Data1: Cobalt
 Data1: Manganese
 Production: Manganese
 
attend (1)
 Biography: Lise Meitner
 
attended (5)
 Biography: Antoine-Laurent de Lavoisier
 Biography: Dmitriy Ivanovich Mendeleyev
 Biography: Joseph W. Kennedy
 Biography: Louis Jacques Thenard
 Biography: Michael Faraday
 
attending (1)
 Biography: Joseph Louis Gay-Lussac
 
attention (2)
 Biography: Robert Wilhelm Bunsen
 Isotope: Calcium
 
attenuation (118)
 MAC data: Actinium
 MAC data: Aluminium
 MAC data: Americium
 MAC data: Antimony
 MAC data: Argon
 MAC data: Arsenic
 MAC data: Astatine
 MAC data: Barium
 MAC data: Berkelium
 MAC data: Beryllium
 MAC data: Bismuth
 MAC data: Bohrium
 MAC data: Boron
 MAC data: Bromine
 MAC data: Cadmium
 MAC data: Caesium
 MAC data: Calcium
 MAC data: Californium
 MAC data: Carbon
 MAC data: Cerium
 MAC data: Chlorine
 MAC data: Chromium
 MAC data: Cobalt
 MAC data: Copper
 MAC data: Curium
 MAC data: Darmstadtium
 MAC data: Dubnium
 MAC data: Dysprosium
 MAC data: Einsteinium
 MAC data: Erbium
 MAC data: Europium
 MAC data: Fermium
 MAC data: Fluorine
 MAC data: Francium
 MAC data: Gadolinium
 MAC data: Gallium
 MAC data: Germanium
 MAC data: Gold
 MAC data: Hafnium
 MAC data: Hassium
 MAC data: Helium
 MAC data: Holmium
 MAC data: Hydrogen
 MAC data: Indium
 MAC data: Iodine
 MAC data: Iridium
 MAC data: Iron
 MAC data: Krypton
 MAC data: Lanthanum
 MAC data: Lawrencium
 MAC data: Lead
 MAC data: Lithium
 MAC data: Lutetium
 MAC data: Magnesium
 MAC data: Manganese
 MAC data: Meitnerium
 MAC data: Mendelevium
 MAC data: Mercury
 MAC data: Molybdenum
 MAC data: Neodymium
 MAC data: Neon
 MAC data: Neptunium
 MAC data: Nickel
 MAC data: Niobium
 MAC data: Nitrogen
 MAC data: Nobelium
 MAC data: Osmium
 MAC data: Oxygen
 MAC data: Palladium
 MAC data: Phosphorus
 MAC data: Platinum
 MAC data: Plutonium
 MAC data: Polonium
 MAC data: Potassium
 MAC data: Praseodymium
 MAC data: Promethium
 MAC data: Protactinium
 MAC data: Radium
 MAC data: Radon
 MAC data: Rhenium
 MAC data: Rhodium
 MAC data: Roentgenium
 MAC data: Rubidium
 MAC data: Ruthenium
 MAC data: Rutherfordium
 MAC data: Samarium
 MAC data: Scandium
 MAC data: Seaborgium
 MAC data: Selenium
 MAC data: Silicon
 MAC data: Silver
 MAC data: Sodium
 MAC data: Strontium
 MAC data: Sulfur
 MAC data: Tantalum
 MAC data: Technetium
 MAC data: Tellurium
 MAC data: Terbium
 MAC data: Thallium
 MAC data: Thorium
 MAC data: Thulium
 MAC data: Tin
 MAC data: Titanium
 MAC data: Tungsten
 MAC data: Ununbium
 MAC data: Ununhexium
 MAC data: Ununoctium
 MAC data: Ununpentium
 MAC data: Ununquadium
 MAC data: Ununseptium
 MAC data: Ununtrium
 MAC data: Uranium
 MAC data: Vanadium
 MAC data: Xenon
 MAC data: Ytterbium
 MAC data: Yttrium
 MAC data: Zinc
 MAC data: Zirconium
 
attinio (1)
 Names: Actinium
 
attract (3)
 Compounds: Silver
 Data1: Manganese
 Glossary: Electronegativity
 
attracted (4)
 Biography: Robert Wilhelm Bunsen
 Data1: Manganese
 Data1: Titanium
 Glossary: Magnetic Ordering
 
attraction (6)
 Data1: Titanium
 Document: The Noble Gases (Group 18)
 Equation: Van der Waals equation
 Glossary: Ionic bonds
 Glossary: Noble Gasses (inert gasses)
 On This Day... 23 November
 
attractive (2)
 Glossary: van der Waals radius
 Production: Strontium
 
attribute (1)
 Glossary: pH
 
attributed (7)
 Biography: Julius Caesar Scaliger
 Biography: Robert Wilhelm Bunsen
 Biography: Sir Humphry Davy
 Data1: Cobalt
 Data1: Helium
 Data1: Polonium
 Isotope: Magnesium
 
au (9)
 Atomic data: Gold
 Data1: Gold
 Data2: Gold
 Isotope: Gold
 Isotope: Mercury
 Isotope: Platinum
 Production: Francium
 Reactions: Gold
 Spectrum: Gold
 
au+ (2)
 Atomic data: Gold
 Reactions: Gold
 
au+1 (1)
 Data2: Gold
 
au+2 (1)
 Data2: Gold
 
au+3 (1)
 Data2: Gold
 
au+5 (1)
 Data2: Gold
 
au+7 (1)
 Data2: Gold
 
au0 (1)
 Data2: Gold
 
au2o3 (1)
 Compounds: Oxygen
 
au3+ (1)
 Reactions: Gold
 
aubr2 (1)
 Reactions: Gold
 
aubr3 (1)
 Reactions: Gold
 
aubr4 (1)
 Reactions: Gold
 
aucl2 (1)
 Reactions: Gold
 
aucl3 (1)
 Reactions: Gold
 
aucl4 (1)
 Reactions: Gold
 
auer (12)
 Biography: Carl Auer Baron von Welsbach
 Biography: Carl Gustav Mosander
 Biography: Georges Urbain
 Data1: Lanthanum
 Data1: Lutetium
 Data1: Neodymium
 Data1: Osmium
 Data1: Praseodymium
 Data1: Tungsten
 Data1: Ytterbium
 On This Day... 1 September
 On This Day... 9 September
 
auerlicht (1)
 On This Day... 9 September
 
auger (3)
 Glossary: Double Electron Capture
 Glossary: Electron Capture
 On This Day... 14 May
 
augment (1)
 Data1: Lithium
 
august (73)
 Biography: Andre Louis Debierne
 Biography: Andreas Sigismund Marggraf
 Biography: Antoine Alexandre Brutus Bussy
 Biography: Antoine-Laurent de Lavoisier
 Biography: Arthur Jeffrey Dempster
 Biography: Carl Auer Baron von Welsbach
 Biography: Dmitriy Ivanovich Mendeleyev
 Biography: George Charles de Hevesy
 Biography: Hans Christian Oersted
 Biography: Johan Gadolin
 Biography: Johann August Arfvedson
 Biography: Jöns Jacob Berzelius
 Biography: Julius Caesar Scaliger
 Biography: Michael Faraday
 Biography: Philip Hauge Abelson
 Biography: Pierre Jules César Janssen
 Biography: Robert Wilhelm Bunsen
 Biography: Sir William Crookes
 Biography: Walter Noddack
 Biography: William Hyde Wollaston
 Compounds: Argon
 Data1: Bohrium
 Data1: Darmstadtium
 Data1: Dubnium
 Data1: Hassium
 Data1: Helium
 Data1: Lawrencium
 Data1: Lithium
 Data1: Meitnerium
 Data1: Oxygen
 Data1: Plutonium
 Data1: Rutherfordium
 Data1: Scandium
 Data1: Seaborgium
 Data1: Ununpentium
 Data1: Ununtrium
 Glossary: Brinell Hardness
 On This Day... 1 August
 On This Day... 10 August
 On This Day... 11 August
 On This Day... 12 August
 On This Day... 12 January
 On This Day... 13 August
 On This Day... 14 August
 On This Day... 15 August
 On This Day... 16 August
 On This Day... 17 August
 On This Day... 18 August
 On This Day... 19 August
 On This Day... 2 August
 On This Day... 20 August
 On This Day... 21 August
 On This Day... 22 August
 On This Day... 23 August
 On This Day... 24 August
 On This Day... 25 August
 On This Day... 26 August
 On This Day... 27 August
 On This Day... 27 January
 On This Day... 28 August
 On This Day... 29 August
 On This Day... 3 August
 On This Day... 30 August
 On This Day... 31 August
 On This Day... 31 July
 On This Day... 4 August
 On This Day... 5 August
 On This Day... 6 August
 On This Day... 7 August
 On This Day... 7 September
 On This Day... 8 April
 On This Day... 8 August
 On This Day... 9 August
 
auguste (1)
 Data1: Thallium
 
augustus (1)
 On This Day... 17 July
 
aui (1)
 Reactions: Gold
 
auranofin (1)
 Compounds: Gold
 
aurothioglucose (1)
 Compounds: Gold
 
aurothiomalate (1)
 Compounds: Gold
 
aurum (2)
 Data1: Gold
 Names: Gold
 
ausc6h11o5 (1)
 Compounds: Gold
 
austin (1)
 Biography: Joseph W. Kennedy
 
australia (43)
 Country: Australia
 Data1: Cerium
 Data1: Copper
 Data1: Dysprosium
 Data1: Erbium
 Data1: Europium
 Data1: Gadolinium
 Data1: Gold
 Data1: Iron
 Data1: Lanthanum
 Data1: Lead
 Data1: Lutetium
 Data1: Manganese
 Data1: Molybdenum
 Data1: Neodymium
 Data1: Nickel
 Data1: Praseodymium
 Data1: Samarium
 Data1: Silicon
 Data1: Silver
 Data1: Tantalum
 Data1: Terbium
 Data1: Thorium
 Data1: Thulium
 Data1: Titanium
 Data1: Uranium
 Data1: Zinc
 Data1: Zirconium
 Production: Aluminium
 Production: Carbon
 Production: Gold
 Production: Iron
 Production: Lead
 Production: Manganese
 Production: Nickel
 Production: Palladium
 Production: Radium
 Production: Silver
 Production: Tantalum
 Production: Titanium
 Production: Uranium
 Production: Zinc
 Production: Zirconium
 
australian (6)
 Allotrope: Carbon
 Country: Australia
 Data1: Praseodymium
 Data1: Uranium
 Production: Aluminium
 Production: Uranium
 
austria (8)
 Biography: Franz-Joseph Muller Freiherr von Reichenstein
 Biography: Lise Meitner
 Country: Austria
 Data1: Magnesium
 Data1: Neodymium
 Data1: Praseodymium
 Data1: Silicon
 Production: Tungsten
 
austrian (12)
 Biography: Carl Auer Baron von Welsbach
 Biography: Georges Urbain
 Biography: Lise Meitner
 Biography: Martin Heinrich Klaproth
 Data1: Lutetium
 Data1: Meitnerium
 Data1: Neodymium
 Data1: Polonium
 Data1: Praseodymium
 On This Day... 1 September
 On This Day... 22 August
 On This Day... 29 October
 
aute2 (1)
 Data1: Tellurium
 
authentic (2)
 Data1: Francium
 Data1: Zinc
 
author (3)
 Biography: Charles Hatchett
 Biography: Julius Caesar Scaliger
 Data1: Ununhexium
 
authorities (2)
 Data1: Radium
 Data1: Radon
 
authority (6)
 Country: United Kingdom
 Data1: Protactinium
 On This Day... 18 January
 On This Day... 22 December
 On This Day... 24 September
 On This Day... 9 June
 
autoignition (4)
 Data2: Hydrogen
 Data2: Magnesium
 Data2: Phosphorus
 Glossary: Pyrophoric
 
automobile (3)
 Compounds: Nitrogen
 Data1: Antimony
 Production: Lead
 
automotive (3)
 Compounds: Indium
 Compounds: Tantalum
 Compounds: Titanium
 
autunite (1)
 Production: Uranium
 
auxetic (1)
 Glossary: Poisson Ratio
 
auxiliary (1)
 Data1: Promethium
 
avail (1)
 Data1: Iodine
 
availability (28)
 Data1: Antimony
 Data1: Darmstadtium
 Data1: Dubnium
 Data1: Hassium
 Data1: Helium
 Data1: Indium
 Data1: Iridium
 Data1: Iron
 Data1: Krypton
 Data1: Lawrencium
 Data1: Lead
 Data1: Magnesium
 Data1: Platinum
 Data1: Rhenium
 Data1: Roentgenium
 Data1: Rutherfordium
 Data1: Ununbium
 Data1: Ununhexium
 Data1: Ununoctium
 Data1: Ununpentium
 Data1: Ununquadium
 Data1: Ununseptium
 Data1: Ununtrium
 Data1: Vanadium
 Data1: Xenon
 Data1: Zinc
 Data1: Zirconium
 Production: Uranium
 
aver (2)
 Data1: Neodymium
 Data1: Praseodymium
 
average (26)
 Country: Canada
 Country: Outer space
 Data1: Phosphorus
 Data1: Radon
 Data1: Ruthenium
 Document: Chemical makeup of the human body
 Glossary: Abundance
 Glossary: Atomic Mass
 Glossary: Electron
 Glossary: Electron Volt
 Glossary: Half Life
 Glossary: Magic Number
 Glossary: Temperature
 Isotope: Tungsten
 Production: Aluminium
 Production: Bismuth
 Production: Caesium
 Production: Copper
 Production: Gold
 Production: Indium
 Production: Lithium
 Production: Mercury
 Production: Molybdenum
 Production: Radon
 Production: Thorium
 Production: Uranium
 
averaging (1)
 Production: Strontium
 
averting (1)
 Data1: Sulfur
 
avogadro (5)
 Equation: Avogadro's law
 Glossary: Avogadro's Constant
 Glossary: Mole
 On This Day... 13 July
 On This Day... 14 October
 
avogrado (1)
 On This Day... 9 August
 
avoid (1)
 Glossary: Brinell Hardness
 
avoided (3)
 Data1: Chlorine
 Data1: Dysprosium
 Data1: Fluorine
 
award (3)
 Biography: Charles Hatchett
 Biography: Enrico Fermi
 Biography: Glenn Theodore Seaborg
 
awarded (11)
 Allotrope: Carbon
 Biography: Enrico Fermi
 Biography: George Charles de Hevesy
 Biography: Irene Joliot-Curie
 Biography: John William Strutt Rayleigh
 Biography: Peter Armbruster
 Biography: Robert Wilhelm Bunsen
 Glossary: Antiproton
 On This Day... 12 September
 On This Day... 31 January
 On This Day... 4 April
 
awarding (1)
 Biography: Charles Hatchett
 
awards (2)
 Biography: Peter Armbruster
 On This Day... 15 February
 
axe (1)
 Data1: Copper
 
axel (4)
 Biography: Baron Axel Fredrik Cronstedt
 Data1: Nickel
 On This Day... 23 December
 On This Day... 6 July
 
axes (1)
 Glossary: Thermal Conductivity
 
axis (1)
 Glossary: Thermal Conductivity
 
axles (1)
 Data1: Manganese
 
azerbaijan (1)
 Country: Azerbaijan
 
azide (4)
 Compounds: Lead
 Data2: Copper
 Production: Caesium
 Production: Sodium
 
azides (3)
 Data1: Nitrogen
 Data2: Mercury
 On This Day... 27 May
 
azote (1)
 Names: Nitrogen
 
azoto (1)
 Names: Nitrogen
 
azufre (1)
 Names: Sulfur
 
azure (1)
 Compounds: Cobalt
 
azurite (2)
 Data1: Copper
 Production: Copper