Question

Is melting exothermic or endothermic process?

Answer 1

Concept:

1. Definition:: Endothermic process: Chemical reaction that absorbs chemical energy is called an endothermic process.
2. Exothermic process: Chemical reaction that releases chemical energy is called an exothermic process.
3. Melting is a physical process in which the transfer of phase from solid to liquid takes place.
4. Chemical changes involve either absorption of heat or the release of heat. So melting is an endothermic process because needs to apply external heat to the solid substance in order to make it melt.

Final Answer: Melting is an endothermic process because when heat absorbs then the physical state will change from solid to liquid.