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← ScienceWhich outcome results when an endothermic phase transition occurs?
A)System internal energy will increase.✓
B)Surrounding environment gets warmer.
C)Molecular motion spontaneously decreases.
D)Entropy of the system decreases.
💡 Explanation
An endothermic phase transition absorbs energy in the form of heat, and the system's internal energy then increases via heat transfer, because kinetic energy increases during changes of phase. Therefore, system internal energy increases rather than the other options which describe exothermic situations or changes.
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