A. all the heat is used to break the bonds holding the molecules of the solid together
B. the heat capacity has become very large as the substance melts
C. the heat energy is quickly conducted away
D. the heat gained is equal to the heat lost by the substance
Correct Answer: Option A
A. all the heat is used to break the bonds holding the molecules of the solid together
Explanation
During the transformation of the matter from the solid to the liquid state, the heat supplied does not produce a temperature increase because all the heat is used to break the bonds holding the molecules of the solid together
