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What is crystallisation


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Crystallization is the formation of crystals that results when a solid precipitates from a liquid solution or, rarely, directly from a gas. The term is used to describe this process in nature as well as when it occurs in a laboratory or industrial setting.
Crystals form when the concentration of a solute reaches a maximum, a condition called supersaturation. Cooling or evaporation of the solution will then trigger the crystallization process. A reduction in temperature can trigger crystal formation because the ability of a solution to hold a solute depends partially on the temperature. As the temperature decreases, so does solubility. Evaporation increases the concentration of the solute in the solution, triggering crystallization.

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