How does the motion of gas particles change when the temperature of the gas increases (Particle motion in gases)

The correct answer is They move faster and collide more often.

Practical lens: Link apparatus, readings, and uncertainty to the exact measurement named in the objective. This question asks: How does the motion of gas particles change when the temperature of the gas increases (Particle motion in gases). The correct response is They move faster and collide more often, because density links mass and volume, so the answer must preserve which quantity is being calculated. In Particle motion in gases, the marking point should connect directly to use the particle model to explain why gas pressure increases when temperature increases at constant volume. 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 494 is distinct because it uses this exact question context and the practical lens rather than a generic particle-model sentence.