Question

Q2: - -Why does the temperature of a substance remain constant during its melting point or

boiling point? ​

Answer 1

Explanation:

The 'temperature of a substance' remains constant during its melting and boiling point because the change in any state of matter as n solid to liquid or the liquid to a gas involves crossing the 'latent heat of fusion' which causes a change in the intermolecular spacing of the molecules in the substance.

Answer 2

Answer:

this is because of the latent heat only heat / melt the substance using pressure