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Calcium oxide

 

Calcium oxide, lime or quicklime, is a chemical compound of formula CaO. This word acts in the name of other substances, such as "lime"or "slaked lime", which is calcium hydroxide, Ca (OH) 2. Formerly used "lime" instead of "calcium" in some names of compounds where this element acts as the "powder" or "Gypsum (calcium sulfate dihydrate, CaSO4 • 2H2O) or marble or chalk (calcium carbonate, CaCO3). The sedimentary deposits of calcium carbonate called caliche.