What is the equation for energy transferred during a change of state?

The correct answer is energy = mass x specific latent heat.

Exam lens: Write the relationship, substitute values only when needed, and finish by interpreting the result. This question asks: What is the equation for energy transferred during a change of state. The correct response is energy = mass x specific latent heat, because density links mass and volume, so the answer must preserve which quantity is being calculated. In Changes of state and specific latent heat, the marking point should connect directly to recall and apply the equation energy for a change of state = mass x specific latent heat. 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 383 is distinct because it uses this exact question context and the exam lens rather than a generic particle-model sentence.