How does heating affect the internal energy of a system?

The correct answer is Heating increases the internal energy by increasing the kinetic energy of particles..

Unit lens: Check the units before giving the final statement so the physics quantity is not swapped. This question asks: How does heating affect the internal energy of a system. The correct response is Heating increases the internal energy by increasing the kinetic energy of particles., because internal energy combines particle kinetic and potential energy. In Internal energy, the marking point should connect directly to distinguish temperature from internal 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 241 is distinct because it uses this exact question context and the unit lens rather than a generic particle-model sentence.