What is the relationship between work done on a gas and its internal energy (Increasing the pressure of a gas (physics only) (HT only))

The correct answer is Work done increases internal energy.

Particle lens: Describe arrangement, motion, spacing, collisions, or energy changes only when they are relevant here. This question asks: What is the relationship between work done on a gas and its internal energy (Increasing the pressure of a gas (physics only) (HT only)). The correct response is Work done increases internal energy, 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) Link work done on gas particles to increased particle kinetic 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 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 612 is distinct because it uses this exact question context and the particle lens rather than a generic particle-model sentence.