How does compressing a gas quickly affect its temperature?

The correct answer is The temperature increases.

Comparison lens: State both sides of the comparison so the contrast is explicit rather than implied. This question asks: How does compressing a gas quickly affect its temperature. The correct response is The temperature increases, because gas pressure comes from particle collisions with container walls. In Increasing the pressure of a gas (physics only) (HT only), the marking point should connect directly to (Physics only) (HT only) Use the particle model to explain energy transfer during gas compression. 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 629 is distinct because it uses this exact question context and the comparison lens rather than a generic particle-model sentence.