A. The pressure on the molecules decreases.
B. The molecules gain more kinetic energy.
C. The molecules make more impact per second on the walls of the container.
D. The molecules increase in size.
Correct Answer:
Option C – The molecules make more impact per second on the walls of the container.
Explanation
More collisions mean more force, so the pressure will increase.
When the volume decreases, the pressure increases.
This shows that the pressure of a gas is inversely proportional to its volume.
This is shown by Boyle’s law.
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