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OCR: EVAPORATION AND CRYSTALLIZATION HE PROCESS of removing liquid Blue copper sulfate from substance by heat crystals deposited Water known evaporation. grapes are evaporates left out in the sun, for example they lose water and become raisins. Chemists use evaporation to separate the liquid part from the solid part ofa solution (a liquid containing Heat dissolved solid particles). The solution heated so that the liquid leaving the solid behind. IF a solution F saturated (cannot hold any more dissolved solid), the solid may be left behind crystals. This process called crystallization. Making crystals If you beat copper sulfate solution, the water evaporates, leaving copper sulfate crystals EVAPORATJON