Question

When 1kg of a substance changes from solid to liquid at its melting point, it must absorbed an amount of heat equal to which of the following?
A. specific heat of phase changes
B. specific heat capacity
C. latent heat of fusion
D. latent heat of vaporization

Answer 1

answer is (c), the latent heat of fusion. That is by definition the heat that 1 kg of a substance must absorb to melt in the vicinity of its melting point.