A gas at a fixed temperature is held in a container with constant volume. The gas produces a pressure on the container walls. This pressure results from gas molecules colliding with the walls. Which statement about the gas molecules as they collide with the walls is correct?
- AThe average kinetic energy of the gas molecules changes.
- BThe average momentum of the gas molecules changes.
- CThe average speed of the gas molecules changes.
- DThe chemical energy of the gas molecules changes.