What does specific latent heat refer to?

The correct answer is Energy needed to change the state of one kilogram of a substance with no change in temperature.

Evidence lens: Use the data, graph feature, practical observation, or particle behaviour that proves the answer. This question asks: What does specific latent heat refer to. The correct response is Energy needed to change the state of one kilogram of a substance with no change in temperature, because the particle model explains the observable property using particles. In Changes of state and specific latent heat, the marking point should connect directly to apply MS 4a and MS 4c skills when interpreting graphs of temperature against time. 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 441 is distinct because it uses this exact question context and the evidence lens rather than a generic particle-model sentence.