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Calcium oxide
Time: 2015-01-30

Calcium oxide, commonly known as quicklime or lime, chemical formula CaO, is a common inorganic compound. Calcium oxide, usually obtained from limestone or seashells, heats a substance containing calcium carbonate to 500-600 ° C, causing it to decompose into calcium oxide and carbon dioxide. It's one of the few chemical reactions known from prehistoric times.

  
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