Question

Explain why energy must be added to a solid to cause it to melt.

Answer 1

Energy must be added to a solid to cause it to melt an example of an energy that will do this is thermal energy. When thermal energy is added to the ice it will make the molecules vibrate a lot faster causing the ice to melt.

Step-by-step explanation:

Answer 2

The particles within the solid are held together in a tight lattice, and for them to become a liquid, they have to overcome this attraction and flow more freely. Energy is required to overcome this attraction, which is why melting is an endothermic process.