Calcium oxide
Calcium Oxide
Calcium oxide (pronunciation: /ˈkalsiəm ˈɒksaɪd/), commonly known as quicklime or burnt lime, is a widely used chemical compound. It is a white, caustic, alkaline, crystalline solid at room temperature. The broadly used term "lime" connotes calcium-containing inorganic materials, in which carbonates, oxides and hydroxides of calcium, silicon, magnesium, aluminium, and iron predominate.
Etymology
The term "calcium" originates from the Latin word "calx" which means "lime". The term "oxide" is derived from the Greek word "oxys" which means "acid" or "sharp". The term "quicklime" is derived from the Old English "cwic", meaning "alive", referring to the characteristic hissing, and vigorous reaction of quicklime with water.
Chemical Properties
Calcium oxide is a basic oxide and reacts with acids to form salts. Upon contact with water, it converts to calcium hydroxide and releases heat in an exothermic reaction.
Uses
Calcium oxide is used in a variety of applications, including the production of cement, preparation of lime mortar, in the manufacture of glass, and as a dehydrating agent in the chemical industry. It is also used in laboratories for drying purposes.
Related Terms
See Also
External links
- Medical encyclopedia article on Calcium oxide
- Wikipedia's article - Calcium oxide
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