Effusion of sulfur hexafluoride
Sulfur hexafluoride gas effuses through a porous cup, demonstrating the effect of the size and mass of molecules.
gases
Hydrogen and chlorine cannon
Hydrogen and chlorine gases can be mixed together without reacting, but when the mixture is struck with bright light, it reacts explosively.
Hydrogen and chlorine cannon animation
This brief animation illustrates the chain reaction that occurs when hydrogen and chlorine gases react.