In making ice cream, the flavored cream is in a container in contact with ice. In order to freeze the ice cream why is it essential to make the ice melt at a very low temperature?
A) Liquid water has a high specific heat.
B) The melted ice makes it easier for the air to remove energy from the ice cream.
C) The low temperature of the ice as well as its melting removes energy from the flavored cream, causing it to freeze.
D) It is easier to stir things around with the ice melted.

Question

Quizplus · Accepted Answer

The low temperature of the ice, especially when salt is added to lower its melting point, absorbs heat from the surrounding environment (in this case, the flavored cream). This process of melting requires energy, which is taken from the cream, thus lowering its temperature and causing it to freeze.

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