Physics for IGCSE & O level - Forces And Pressure (Section 7 - No. 50)
The force exerted by a gas on the walls of its container is due to:
The weight of the gas molecules
The collisions of the gas molecules with the container walls
The electrostatic attraction between gas molecules and the walls
The size of the container
Explanation
Gas pressure is caused by the collisions of the gas molecules with the container walls.
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