anhydrataattimuotoon
Anhydrataattimuotoon, often shortened to anhydrate, refers to a chemical compound that has no water molecules in its crystal structure. This is in contrast to a hydrate, which does contain water molecules within its crystalline lattice. The term "anhydrate" is derived from Greek words meaning "without water." When a hydrated compound loses its water molecules, it is said to be dehydrated or converted into its anhydrous form. This transformation can often be achieved by heating the hydrated salt.
The physical properties of a compound can change significantly between its hydrated and anhydrous forms. For