Why does a gas exert pressure on the walls of its container?
Answer and explanation
Correct answer: B. Its molecules collide with the walls
- Step 1: Gas particles move randomly and collide with the walls, each collision exerting a small force.
- Step 2: Many collisions produce a steady pressure.
Answer
Its molecules collide with the walls.
Why not the others: Repulsion between molecules, rest, and loss of energy are not the cause of gas pressure.
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