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Answer» When a liquid freezes, it releases THERMAL energy into its immediate environment.
When a solid melts, it releases thermal energy into its immediate environment.
For most substnaces, the LATENT heat of fusion is greater than the latent heat of vaporization
as a solid melts, its temperature increases. Solution :The first law of thermodynamics states that energy is neither crated not destroyed. So when PHASE change happens, thermal energy (heat)is either released or absorbed. Choice (B) is false, because a solid must absorb thermal energy in order to melt. choice (C) is false since it generally requires MUCH more energy to break the intermolecular bonds of a liquid to change itsstate to VAPOR than to loosen the intermolecular bonds of a solid to change its state to liquid. and (D) and (D) are false: while a substance undergoes a phase change, its temperature remains constant. the answer must be (A).
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