Simple Description

Describes a substance that does not contain water

Further Detail

Copper sulfate can be anhydrous or hydrated. CuSO4 (anhydrous, white form) or CuSO4.7H2O (hydrated, blue form). The hydrated form can be heated to drive off the water to form the anhydrous form, the white crystals. The anhydrous form can have a few drops of water added to it to fornm the hydrated form, the blue crystals. This is an example of a reversible reaction.

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