What is the difference between specific latent heat of fusion and specific latent heat of vaporisation?

Specific latent heat of fusion is the energy required to change a substance from solid to liquid at its melting point without changing its temperature. In contrast, specific latent heat of vaporisation is the energy needed to change a substance from liquid to gas at its boiling point, also without a temperature change.

Particle lens: Describe arrangement, motion, spacing, collisions, or energy changes only when they are relevant here. This question asks: What is the difference between specific latent heat of fusion and specific latent heat of vaporisation. The correct response is Specific latent heat of fusion is the energy required to change a substance from solid to liquid at its melting point without changing its temperature. In contrast, specific latent heat of vaporisation is the energy needed to change a substance from liquid to gas at its boiling point, also without a temperature change., 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 distinguish specific latent heat of fusion from specific latent heat of vaporisation. 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 372 is distinct because it uses this exact question context and the particle lens rather than a generic particle-model sentence.