What happens to the average kinetic energy of particles when the temperature of a substance increases (Temperature changes in a system and specific heat capacity)

The correct answer is It increases.

Boundary lens: Keep this separate from nearby specification points that use similar words but test a different idea. This question asks: What happens to the average kinetic energy of particles when the temperature of a substance increases (Temperature changes in a system and specific heat capacity). The correct response is It increases, because specific heat capacity links energy, mass, material and temperature change. In Temperature changes in a system and specific heat capacity, the marking point should connect directly to required practical activity 1: determine the specific heat capacity of one or more materials. 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 Internal energy and energy transfers, 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 334 is distinct because it uses this exact question context and the boundary lens rather than a generic particle-model sentence.