Discovery of Hydrogen (2:57) --
Hydrogen Chemical Equations (1:57) --
18th Century Chemistry Tools (1:32) --
H2O Compound Discovery (1:07) --
Forming New Chemicals (1:13) --
Hindenburg Disaster (1:23) --
Nitrogen and the Atmosphere (3:56) --
Discovering Nitrogen (1:11) --
Atmospheric Composition (1:17) --
Identifying True Elements (1:32) --
Credits: Shedding Light on Atoms Episode 2: Oxygen Everywhere (0:20)