Heat is applied to an ice-water mixture to melt some of the ice.In this process
A)work is done by the ice-water mixture.
B)the temperature increases.
C)the internal energy increases.
D)all of the above are correct.

Question

Quizplus · Accepted Answer

The melting of ice occurs at a constant temperature until all of the ice has melted. Therefore, the temperature does not increase until all of the ice has melted. Since the heat is causing a phase change, no work is being done. However, the internal energy of the system is increasing as the ice melts, so Option C is correct.  Option D is incorrect as Option A is not correct.

Heat Is Applied to an Ice-Water Mixture to Melt Some