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===Meaning===
A [[precipitate]] is a [[solid]] [[insoluble]] [[compound]] formed by the [[Chemical Reaction|chemical reaction]] between two other [[chemical]]s in [[solution]].
===About Precipitates===
: The [[reactant]]s in a '''precipitation''' [[Chemical Reaction|reaction]] are [[aqueous]] or [[gas]]eous but at least one of the [[product]]s is an [[insoluble]] [[solid]].
: Some common [[precipitate]] [[Chemical Reaction|reactions]] you may know are:
: Lead Nitrate + Potassium Iodide → Potassium Nitrate + Lead Iodide
<math>Pb(NO_3)_2(aq) + 2KI(aq) → 2KNO_3(aq) + PbI_2(s)</math>
: [[Calcium Oxide]] + [[Carbon Dioxide]] → [[Calcium Carbonate]]
<math>CaO(aq) + CO_2(g) → CaCO_3(s)</math>