In making ice cream, the flavored cream is in a container in contact with melting ice. When the ice cream freezes it give energy up to the ice / water mixture. What happens to the temperature of the ice / water mixture?
A) It will increase from the ice cream's heat.
B) It will not change because the energy is going into its melting the ice.
C) It will increase from stirring.
D) It decreases.

Question

Quizplus · Accepted Answer

The temperature of the ice/water mixture does not change during the process because the energy given up by the ice cream is used to melt the ice, a process that occurs at a constant temperature. This is a characteristic of phase changes, where energy goes into changing the state of the substance (from solid to liquid in this case) without changing its temperature.

In Making Ice Cream, the Flavored Cream Is in a Container