Question

why does the temperature of a substance remain constant during its melting point or boiling point​

Answer 1

The extra heat supplied is used in the melting of ice which is called the latent heat of fusion. Similarly, when a liquid starts boiling the temperature of the liquid does not change instead of a continuous supply of heat. ... That's why the temperature of a substance remains constant during its melting or boiling.

Answer 2

Answer:

because the substance have a time and temperature for melting and boiling ........