Why do gas particles collide more frequently when the temperature increases (Particle motion in gases)

The correct answer is They have greater kinetic energy.

Unit lens: Check the units before giving the final statement so the physics quantity is not swapped. This question asks: Why do gas particles collide more frequently when the temperature increases (Particle motion in gases). The correct response is They have greater kinetic energy, 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 469 is distinct because it uses this exact question context and the unit lens rather than a generic particle-model sentence.