Enthalpy of melting is a big, fancy word that describes how much heat it takes to melt something. Imagine you have an ice cream cone. If you want to make the ice cream all melty and gooey, you need to put it in the sun or hold it in your hands. That's because heat makes things melt.
So when we talk about the enthalpy of melting, we're measuring how much heat it takes to turn a solid, like ice cream, into a liquid. Scientists use this measurement to figure out how easy or hard it is to melt different things.
For example, some things like butter or chocolate melt easily because they have a low enthalpy of melting. Others, like metal, might take a lot of heat to melt because they have a high enthalpy of melting.
So, the enthalpy of melting is just like knowing how much heat it takes to make things go from solid to liquid, which helps us understand how things behave when we try to melt them.