6
QuizMultiple Choice

Phase Changes

Question 6 • IA-Chemistry A Survey of Chemistry A

Which energy change occurs during boiling?

Answer
A
Some heat energy of the substance is lost.
B
Heat energy of the substance remains the same.
C
Most heat energy of the substance is lost.
D
Heat energy is absorbed by the substance.

Explanation

During boiling, the substance absorbs heat energy to overcome the forces holding its particles together and change from a liquid to a gas. Its temperature may remain constant while it boils, but the energy absorbed still increases the particles’ potential energy. Therefore, heat energy is absorbed by the substance.

AI-written and checked against the verified answer.

Previous
Next