<P> In chemistry, water of crystallization or water of hydration or crystallization water is water that occurs inside crystals . Water is often incorporated in the formation of crystals from aqueous solutions . In some contexts, water of crystallization is the total weight of water in a substance at a given temperature and is mostly present in a definite (stoichiometric) ratio . Classically, "water of crystallization" refers to water that is found in the crystalline framework of a metal complex or a salt, which is not directly bonded to the metal cation . </P> <P> Upon crystallization from water or moist solvents, many compounds incorporate water molecules in their crystalline frameworks . Water of crystallization can generally be removed by heating a sample but the crystalline properties are often lost . For example, in the case of sodium chloride, the dihydrate is unstable at room temperature . </P> <P> Compared to inorganic salts, proteins crystallize with large amounts of water in the crystal lattice . The water content of 50% is not uncommon for proteins . </P>

What would you observe when the water of crystallization of a salt is removed by heating it
find me the text answering this question