Precipitation (chemistry)

Precipitation is the creation of a solid from a solution. When the reaction occurs in a liquid solution, the solid formed is called the 'precipitate'. The chemical that causes the solid to form is called the 'precipitant'. Without sufficient force of gravity (settling) to bring the solid particles together, the precipitate remains in suspension. After sedimentation, especially when using a centrifuge to press it into a compact mass, the precipitate may be referred to as a 'pellet'. The precipitate-free liquid remaining above the solid is called the 'supernate' or 'supernatant'. Powders derived from precipitation have also historically been known as 'flowers'.

Sometimes the formation of a precipitate indicates the occurrence of a chemical reaction. If silver nitrate solution is poured into a solution of sodium chloride, a chemical reaction occurs forming a white precipitate of silver chloride. When potassium iodide solution reacts with lead nitrate solution, a yellow precipitate of lead iodide is formed.

Precipitate (disambiguation)

Precipitate or precipitates, or variant, may refer to:

See also

Precipitate (EP)

Precipitate is an EP by New York City-based Indie-rock band Interpol. It features two tracks not on albums "Precipitate" and "Song Seven" (although "Precipitate" is on another EP, Fukd ID #3). The featured version of "A Time To Be So Small" is different from the one re-recorded and released three years later on Antics and "PDA" differs from the one released on Turn on the Bright Lights and Fukd ID #3.

The EP was limited to 500 copies. It was sold a year before Interpol's critically acclaimed album Turn on the Bright Lights was released.

Track listing

References