Is sugar crystallization a chemical or physical reaction?

Question: Sugar crystals forming out of solution is an example of a physical change.

a. True
b. False

An answer with a detailed explanation would be most appreciated. Thanks in advance! :)

Answer:
answer is a. true. there is no chemical reaction taking place here. in fact, this is a unit operation in chemical industries.

crystallisation is a process in which the homogeneous phase (sugar solution) is evaporated and then cooled down to supersaturated solution. supersaturated solution is the solution with concentration of the solute(sugar) greater than the solubility of solute at certain temperature. after supersaturation, it goes through nucleation, then followed by crystal growth. after crystallisation, the products comes out as crystals and mother liquor (solution with some solute still dissolved in it) with some water evaporated.

so do u realise no chemical reaction takes places during crystallisation?=)
Since no reaction takes place between the sugar and the crystallizing solvent it is a physical change. Therefore the answer is true

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