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| style="height:20px; width:500px; text-align:center;" |This [[diagram]] shows how the [[insoluble]] [[solid]] gets stuck in the [[Filter Paper|filter paper]] while the [[particle]]s in the [[liquid]] are small enough to pass through the gaps in the [[Filter Paper|filter paper]].
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==Key Stage 4==
===Meaning===
'''Filtration''' is the process of removing an [[insoluble]] [[solid]] from a [[mixture]] with a [[liquid]].
===About Filtration===
'''Filtration''' can only be used for:
*[[Separating Mixtures|Separating]] a [[mixture]] of an [[insoluble]] [[solid]] and a [[liquid]].
*[[Separating Mixtures|Separating]] a [[mixture]] of a [[soluble]] [[solid]] from an [[insoluble]] [[solid]]. This is done by first adding a [[solvent]] to [[dissolve]] the [[soluble]] [[solid]] before then '''filtering'''.
: In an [[experiment]] a [[mixture]] of [[insoluble]] [[solid]] and a [[liquid]] is '''filtered''' using [[Filter Paper|filter paper]]. However, on an industrial scale many different types of '''filter''' can be used to [[Separating Mixtures|separate]] [[insoluble]]s [[solid]]s from [[mixture]]s with [[liquid]]s.