Why can energy transfer change temperature without changing state?

The correct answer is Because energy can increase kinetic energy without changing state.

Comparison lens: State both sides of the comparison so the contrast is explicit rather than implied. This question asks: Why can energy transfer change temperature without changing state. The correct response is Because energy can increase kinetic energy without changing state, because the particle model explains the observable property using particles. In Internal energy, the marking point should connect directly to explain that heating changes the energy stored within a system by increasing particle energy. 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 221 is distinct because it uses this exact question context and the comparison lens rather than a generic particle-model sentence.