What happens to the energy of particles during sublimation?

The correct answer is Energy increases as particles gain energy.

Comparison lens: State both sides of the comparison so the contrast is explicit rather than implied. This question asks: What happens to the energy of particles during sublimation. The correct response is Energy increases as particles gain energy, because gas pressure comes from particle collisions with container walls. In Changes of state, the marking point should connect directly to explain sublimation as a change directly between solid and gas. 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 Changes of state and the particle model, 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 161 is distinct because it uses this exact question context and the comparison lens rather than a generic particle-model sentence.