Question

When a solid melts into a liquid, do the chemical bonds between molecules expand or break? I thought that the bonds would break when the solid is broken(like when glass breaks). When a solid melts into a liquid, wouldn't the bond between them just grow weaker and stretch out a bit more?

Pls detail.

Answer 1

Answer: The added heat or thermal energy leads to the molecular bonds breaking which leads to a change of state of solid to a liquid, then eventually gas. Solids melt when they absorb enough thermal energy.