Question

phase changes
quiz complete
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which energy change occurs during boiling?
some heat energy of the substance is lost.
heat energy of the substance remains the same.
most heat energy of the substance is lost.
heat energy is absorbed by the substance.

Explanation:

Boiling is an endothermic phase change from liquid to gas. For this transition to happen, the substance must absorb heat energy to overcome the intermolecular bonds holding the liquid together, which matches the correct option. The other options are incorrect because boiling requires energy input, not loss or no change.

Answer:

Heat energy is absorbed by the substance.