What is the specific latent heat of fusion ? P43-003 Changes of state and specific latent heat checkpoint

The correct answer is The energy needed to change a substance from solid to liquid ? P43-003 density measurement and calculation.

Method lens: First identify the measured quantity, then match the equation or particle idea to the command word. This question asks: What is the specific latent heat of fusion ?. The correct response is The energy needed to change a substance from solid to liquid ? P43-003 density measurement and calculation, 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 380 is distinct because it uses this exact question context and the method lens rather than a generic particle-model sentence.