Why does the temperature rise slightly immediately after crystallization begins

Question

Why does the temperature rise slightly immediately after crystallization begins in a substance that is being cooled?

Crystallization is an exothermic process, so as a substance crystallizes its temperature will rise

Crystallization is an endothermic process, so when it begins, the temperature drops lower than expected, then rises back up.

Solutions do not have a set freezing point and will vary with the composition.

A substance can be supercooled below its normal freezing point if crystallization has not been initiated. Once crystallization begins, the temeprature returns to the equilibrium freezing temperature.

Crystallization is an exothermic process, so as a substance crystallizes its temperature will rise

Crystallization is an endothermic process, so when it begins, the temperature drops lower than expected, then rises back up.

Solutions do not have a set freezing point and will vary with the composition.

A substance can be supercooled below its normal freezing point if crystallization has not been initiated. Once crystallization begins, the temeprature returns to the equilibrium freezing temperature.

Explanation / Answer

Exothermic reaction: in this reaction heat energy is released.

Endothermic reaction: In this reaction heat energy is absorbed.

Hence the correct option is,

Crystallization is an exothermic process, so as a substance crystallizes its temperature will rise

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