Describe the effect of increasing the temperature of a gas on the force exerted by gas particles on the walls of its container.

Increasing the temperature of a gas increases the average kinetic energy of its particles, causing them to move faster. As a result, the particles collide with the walls more frequently and with greater force, increasing the pressure exerted on the walls.

Evidence lens: Use the data, graph feature, practical observation, or particle behaviour that proves the answer. This question asks: Describe the effect of increasing the temperature of a gas on the force exerted by gas particles on the walls of its container. The correct response is Increasing the temperature of a gas increases the average kinetic energy of its particles, causing them to move faster. As a result, the particles collide with the walls more frequently and with greater force, increasing the pressure exerted 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 465 is distinct because it uses this exact question context and the evidence lens rather than a generic particle-model sentence.