What is the effect of gas pressure on the walls of its container?

The correct answer is It exerts a force on the walls.

Boundary lens: Keep this separate from nearby specification points that use similar words but test a different idea. This question asks: What is the effect of gas pressure on the walls of its container. The correct response is It exerts a force on the walls, because gas pressure comes from particle collisions with container walls. In Particle motion in gases, the marking point should connect directly to explain that collisions of gas particles with container walls exert a force on the walls. If the question includes values, the working must keep the appropriate unit and operation; if it is an explanation, it must name the relevant particle behaviour or energy change. This item belongs to Particle model and pressure, so avoid answers that switch to a different quantity, confuse heat with temperature, or describe gas pressure without collisions when collisions are the reason. Checkpoint 466 is distinct because it uses this exact question context and the boundary lens rather than a generic particle-model sentence.