Occurrence
Properties
Uses
Fun Facts
Gen. Chem.
100
Scientist that is normally credited with discovering hydrogen
Who is Henry Cavendish
100
The three isotopes of hydrogen
What are hydrogen (H-1), deuterium (H-2), and tritium (H-3)?
100
One of the two major uses of hydrogen in the chemical industry
What are nitrogen fixation (Haber ammonia process) or hydrogenation of alkenes (fats and oils)?
100
Scientist who first liquified hydrogen
Who is John Dewar?
100
Five electronic regions
What is trigonal bipyramidal?
200
Year hydrogen was discovered (+/- 5 years)
What is 1766?
200
Two groups of the periodic table hydrogen could belong to
What are the alkali metals and the halogens?
200
Battery technology utilizing hydrogen ions
What is nickel hydride?
200
Exciting claim involving deuterated acetone in 2002
What is the observation of cold fusion (later disproved)?
200
Most electronegative element
What is fluorine?
300
Hydrogen is commonly produced from this reactant
What is water?
300
Approximate percentage of the universe composed of hydrogen (+/- 5%)
What is 75%?
300
Common use of hydrogen before 1937 "incident"
What is Ballast for airships? (Hindenberg disaster , 5/16/37)
300
Claim made by Russian physicists involving hydrogen in 1973
What is the formation of "metallic hydrogen"? (at pressures exceeding 2.8 Mbar)
300
The molecular shape of boron trichloride
What is trigonal planar?
400
Scientist believed to have first produced hydrogen
Who is Paracelsus?
400
Flame color of hydrogen when ignited in the presence of oxygen
What is colorless?
400
Major use of the tritium isotope
What is production of hydrogen bombs?
400
"Invisible killer" involving hydrogen nearly banned by several California communities in the early 1990s
What is DHMO (dihydrogen monoxide, water)?
400
Molecular geometry of methane
What is tetrahedron?
500
Reducing agents commonly used to produce hydrogen
What is methane, carbon, or carbon monoxide/
500
Half-life of the tritium hydrogen isotope
What is 12.4?
500
Powerful organic chemistry reducing agent that utilizes hydrogen
What is lithium aluminum hydride or sodium borohydride?
500
Largest single site collection of famous American architect buildings
What is FSC?
500
An orbital with l=3
What is the f orbital?
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