Question

2. (a) How does a solid change into a liquid?
Explain.​

Answer 1

Answer:

The process of a solid becoming a liquid is called melting. ... It requires energy for a solid to melt into a liquid. Every pure substance has a certain amount of energy it needs to change from a solid to a liquid. This amount is called the enthalpy of fusion (or heat of fusion) of the substance, represented as ΔH fus.

Explanation:

plz mark me as brainlist and plz follow me guys plz plz

Answer 2

At low temperatures, most substances are solid; as the temperature increases, they become liquid; at higher temperatures still, they become gaseous. The process of a solid becoming a liquid is called melting. (an older term that you may see sometimes is fusion).