4
QuizMultiple Choice

Lab: Enthalpy — Unit test

Question 4 • Foothill-B Period-Chemistry-26/27B

Which energy changes are associated with a liquid freezing?

Answer
A
Energy is released as potential energy increases.
B
Energy is absorbed as potential energy increases.
C
Energy is released as potential energy decreases.
D
Energy is absorbed as potential energy decreases.

Explanation

When a liquid freezes, its particles become more ordered and move into a lower-energy arrangement, so their potential energy decreases. The excess energy is released to the surroundings as heat. Therefore, the correct choice is “Energy is released as potential energy decreases.”

AI-written and checked against the verified answer.

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