(Physics only) Explain why decreasing the volume of a gas at constant temperature increases its pressure.

(Physics only) Explain why decreasing the volume of a gas at constant temperature increases its pressure. Boundary lens: Keep this separate from nearby specification points that use similar words but test a different idea. In Pressure in gases (physics only), this means density links mass and volume, so the answer must preserve which quantity is being calculated. The answer should use the approved wording from Particle model and pressure, include pressure, volume, constant temperature, and avoid drifting into another section of Particle model of matter. For revision, practise saying the exact objective aloud, then add the one calculation, particle movement, collision, graph, or practical detail that makes the statement true. A strong exam response for checkpoint 75 is specific to (Physics only) Explain why decreasing the volume of a gas at constant temperature increases its pressure and does not reuse a generic explanation from a neighbouring objective.