Atoms Introduction (1:52) --
Four Element Theory (0:55) --
Democritus' Theory (1:38) --
Chemical Formulas (1:25) --
Mixtures and Metal Alloys (1:41) --
Carbon Dioxide Discovery (1:32) --
Chemical Equations (1:43) --
Carbon Dioxide Chemical Equations (1:35) --
Oxygen Discovery (1:22) --
Chemical Catalysts (1:28) --
Balanced Chemical Equations (1:57) --
Carbon Dioxide and Fire (1:46) --
Credits: Shedding Light on Atoms Episode 1: The Dawn of Modern Chemistry (0:23)