Which statement explains the pressure of a gas?
Answer and explanation
Correct answer: D. Gas particles collide with the walls of the container
- Step 1: Gas particles move randomly at high speed.
- Step 2: Their collisions with the walls exert a force, which gives pressure.
Answer
Gas particles collide with the walls of the container.
Why not the others: Gas particles are attracted to the walls: the pressure comes from collisions. Gas particles are at rest: they move randomly. Gas particles are expanding: particle size is constant.
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