Chemistry / Unit 1 Chem 0024 short lesson, about 20 seconds
Gas
Captions available
The idea
A gas is a state of matter that expands to take both the shape and volume of its container.
In practice
A small amount of helium released into an empty room spreads to fill the entire space, not only the lower portion.
Where people slip
Students often assume a released gas sinks and pools at the bottom like a liquid, instead of spreading to fill the space.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
Unlocks
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