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==Etymology==
com- + [[Latin]] centrum [[center]]
*Date: [http://www.wikipedia.org/wiki/17th_Century 1641]
==Definitions==
:transitive verb
*1 a : to bring or direct toward a common [[center]] or objective : [[focus]] <concentrate one's efforts>
:b : to gather into [[one]] [[body]], [[mass]], or [[force]] <power was concentrated in a few able hands>
:c : to accumulate (a toxic substance) in bodily tissues <fish concentrate mercury>
*2 a : to make less dilute <concentrate syrup>
:b : to [[express]] or exhibit in condensed form
:intransitive verb
*1 : to draw toward or meet in a common [[center]]
*2 : gather, [[collect]]
*3 : to [[focus]] one's [[powers]], efforts, or [[attention]] <concentrate on a [[problem]]
==Description==
In [[chemistry]], '''concentration''' is the [[measure]] of how much of a given substance there is mixed with another substance. This can apply to any sort of chemical mixture, but most frequently the [[concept]] is limited to [[homogeneous]] solutions, where it refers to the amount of solute in the solvent.
To concentrate a solution, one must add more [http://en.wikipedia.org/wiki/Solute solute] (e.g. alcohol), or reduce the amount of [http://en.wikipedia.org/wiki/Solvent solvent] (e.g. water). By [[contrast]], to dilute a solution, one must add more solvent, or reduce the amount of solute.
Unless two substances are fully [http://en.wikipedia.org/wiki/Miscible miscible] there exists a concentration at which no further solute will dissolve in a solution. At this point, the solution is said to be [http://en.wikipedia.org/wiki/Saturation_(chemistry) saturated]. If additional solute is added to a saturated solution, it will not dissolve (except in certain circumstances, when [http://en.wikipedia.org/wiki/Supersaturation supersaturation] may occur). Instead, [http://en.wikipedia.org/wiki/Phase_(matter)#Phase_separation phase separation] will occur, leading to either coexisting phases or a [http://en.wikipedia.org/wiki/Suspension_(chemistry) suspension]. The point of saturation depends on many variables such as ambient temperature and the precise chemical [[nature]] of the solvent and solute.
[[Category: Chemistry]]
[[Category: General Reference]]
==Etymology==
com- + [[Latin]] centrum [[center]]
*Date: [http://www.wikipedia.org/wiki/17th_Century 1641]
==Definitions==
:transitive verb
*1 a : to bring or direct toward a common [[center]] or objective : [[focus]] <concentrate one's efforts>
:b : to gather into [[one]] [[body]], [[mass]], or [[force]] <power was concentrated in a few able hands>
:c : to accumulate (a toxic substance) in bodily tissues <fish concentrate mercury>
*2 a : to make less dilute <concentrate syrup>
:b : to [[express]] or exhibit in condensed form
:intransitive verb
*1 : to draw toward or meet in a common [[center]]
*2 : gather, [[collect]]
*3 : to [[focus]] one's [[powers]], efforts, or [[attention]] <concentrate on a [[problem]]
==Description==
In [[chemistry]], '''concentration''' is the [[measure]] of how much of a given substance there is mixed with another substance. This can apply to any sort of chemical mixture, but most frequently the [[concept]] is limited to [[homogeneous]] solutions, where it refers to the amount of solute in the solvent.
To concentrate a solution, one must add more [http://en.wikipedia.org/wiki/Solute solute] (e.g. alcohol), or reduce the amount of [http://en.wikipedia.org/wiki/Solvent solvent] (e.g. water). By [[contrast]], to dilute a solution, one must add more solvent, or reduce the amount of solute.
Unless two substances are fully [http://en.wikipedia.org/wiki/Miscible miscible] there exists a concentration at which no further solute will dissolve in a solution. At this point, the solution is said to be [http://en.wikipedia.org/wiki/Saturation_(chemistry) saturated]. If additional solute is added to a saturated solution, it will not dissolve (except in certain circumstances, when [http://en.wikipedia.org/wiki/Supersaturation supersaturation] may occur). Instead, [http://en.wikipedia.org/wiki/Phase_(matter)#Phase_separation phase separation] will occur, leading to either coexisting phases or a [http://en.wikipedia.org/wiki/Suspension_(chemistry) suspension]. The point of saturation depends on many variables such as ambient temperature and the precise chemical [[nature]] of the solvent and solute.
[[Category: Chemistry]]
[[Category: General Reference]]
