How does increasing the temperature of a gas affect its particles?

The correct answer is It increases their average kinetic energy..

Boundary lens: Keep this separate from nearby specification points that use similar words but test a different idea. This question asks: How does increasing the temperature of a gas affect its particles. The correct response is It increases their average 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 faster gas particles collide more often and with greater force. 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 490 is distinct because it uses this exact question context and the boundary lens rather than a generic particle-model sentence.