Gypsum
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Gypsum
Gypsum (pronunciation: /ˈdʒɪpsəm/) is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO4·2H2O. It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, blackboard/sidewalk chalk, and drywall.
Etymology
The word "gypsum" is derived from the Greek word γύψος (gypsos), meaning "chalk" or "plaster".
Related Terms
- Calcium sulfate dihydrate: The chemical compound that makes up gypsum.
- Plaster: A building material used for coating walls and ceilings, often made from gypsum.
- Drywall: A panel made of gypsum plaster pressed between two thick sheets of paper. It is used to make interior walls and ceilings.
- Fertilizer: A substance added to soil to increase its fertility. Gypsum is often used as a natural fertilizer.
- Mineral: A naturally occurring inorganic substance with a definite chemical composition and a crystalline structure. Gypsum is a type of mineral.
See Also
External links
- Medical encyclopedia article on Gypsum
- Wikipedia's article - Gypsum
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