O-LevelPhysicsThermal Physics5054/11 · Oct/Nov 2012 · Q151 Mark
When a gas is rapidly compressed to a smaller volume, its temperature increases. What happens to the gas molecules?
AThey move closer together and their average speed decreases.
BThey move closer together and their average speed increases.
CThey move closer together and their average speed remains unchanged.
DThey stay the same distance apart and their average speed increases.
✓ Correct answer
B: They move closer together and their average speed increases.
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