Heat Of Fusion

Imagine trying to get out of bed on a cold winter morning when you're wrapped in a warm, cozy blanket. Just as you need a certain amount of motivation or energy to leave the comfort of your bed and transition into the day, a substance requires energy to change from a solid to a liquid state. In this analogy, your bed is like the solid state, the energy needed to get up is the heat of fusion, and stepping into the day is like the substance melting into a liquid.