Ice is put in a cooler to cool the contents. To speed up the cooling process, the ice can be
A) wrapped in newspaper.
B) drained of water periodically.
C) kept away from the food.
D) broken into smaller pieces.
E) none of the above
Question 2
The cooling effect inside a refrigerator is produced by
A) an electric motor that converts electrical energy to internal energy.
B) compressing the refrigeration gas.
C) vaporizing the refrigeration liquid.
D) proper insulation.
E) exchanging warmer air with colder air.
A hypothetical scenario illustrating the process of chemical selection
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