If the copper sulfhate crystal is made up of copper sulphate sol. So will the crystalline ever melt?

Evaporation is used to separate a soluble solid from a liquid. For example, copper sulfate is soluble in water – its crystals dissolve in water to form copper sulfate solution. During evaporation, the water evaporates away leaving solid copper sulfate crystals behind. when copper sulphate is heated for some time, the blue colour disappears and it becomes white-grey in colour. This is because the water molecules are lost on heating and copper sulphate pentahydrate is converted to anhydrous copper sulphate

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