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Precipitation (chemistry) - Wikipedia, the free encyclopedia
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Precipitation (chemistry)
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This article is about the chemical phenomemon. For other uses, see
Precipitation.
"Precipitate" redirects here. For the album by Interpol, see
Precipitate EP.
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Chemical Precipitation
Precipitation is the formation of a
solid in a
solution or inside another solid during a
chemical reaction or by
diffusion in a solid. When the reaction occurs in a liquid, the solid formed is called the precipitate, or when compacted by a
centrifuge, a pellet. The liquid remaining above the solid is in either case called the supernate or supernatant. Powders derived from precipitation have also
historically been known as flowers.
Natural methods of precipitate include
settling or
sedimentation, where a solid forms over a period of time due to ambient forces like gravity or
centrifugation. During chemical reactions, precipitation may also occur particularly if an
insoluble substance is introduced into a solution and the density happens to be greater (otherwise the precipitate would float or form...
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