What is the definition of specific latent heat?

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

Cause lens: Name the cause, then state the effect on particles, pressure, density, or energy. This question asks: What is the definition of specific latent heat. The correct response is The energy needed to change the state of one kilogram of a substance with no change in temperature, because specific latent heat concerns energy transferred during a state change with no temperature rise. In Changes of state and specific latent heat, the marking point should connect directly to apply MS 3b and MS 3c skills when rearranging and calculating with the specific latent heat equation. 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 448 is distinct because it uses this exact question context and the cause lens rather than a generic particle-model sentence.