Describing a chemical compound that has had its ten water molecules removed or is in the process of losing them.
From decahydrate + -ed (past participle/adjective suffix). When a decahydrate loses its water, it becomes decahydrated.
Decahydrated compounds can look completely different from their hydrated forms—the water molecules act like tiny cushions that affect color, texture, and even how brittle the crystals are!
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