Why would decreasing the temperature of a gas in a syringe make the volume decrease?
In: Chemistry
Because heat is the molecules moving around more energetically, exerting more force on each other and the walls of the cylinder.
Envision your living room with twenty elderly people sleeping in chairs or having a quiet chat over the table. Each of them represent a gas molecule at low temperature.
Now replace them with twenty sugared-up six year olds running wild at a birthday party for heat. The number of molecules are the same, but the latter situation leaves a lot more dents in your walls.
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