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→About Evaporation of Solutions
===About Evaporation of Solutions===
: When you heat a [[solution]] the [[liquid]] will [[evaporating|evaporate]] leaving the [[solid ]] behind.
{| class="wikitable"
|[[File:EvaporatingDish.png|center|200px]]
|}
===Examples===
{| class="wikitable"
|[[File:SaltEvaporationPonds.png|center|400px]]
|-
| style="height:20px; width:400px; text-align:center;" |These people collect salt by putting sea water in small ponds and allowing the warm temperatures to evaporate the water away leaving the behind the salt.
|}
==Key Stage 3==
===Meaning===
'''Evaporation of a solution''' is a way to [[Separating Mixtures|separate]] the [[mixture]] of a [[solution]] to recover the [[solute]] that has been [[dissolve]]d in a [[solvent]].
===About Evaporation of Solutions===
: The '''evaporation of solutions''' recovers the [[solute]]s but loses the [[solvent]].
: '''Evaporation of solutions''' can be done by directly heating the [[solution]] or by giving time for the [[liquid]] to [[evaporating|evaporate]] at low [[temperature]]s.
{| class="wikitable"
|-
|[[File:EvaporatingDiagram.png|center|500px]]
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| style="height:20px; width:200px; text-align:center;" |The [[diagram]] shows the experimental setup to [[evaporating|evaporate]] away the [[solvent]] to leave behind the [[solute]] in the [[Evaporating Dish|evaporating dish]].
|}
==Key Stage 4==
===Meaning===
'''Evaporation of solution''', sometimes called '''Crystallisation''', is a technique used to [[Separating Mixtures|separate]] the [[solute]] from the [[solvent]] in a [[solution]], losing the [[solvent]].
===About Evaporation of Solutions===
'''Evaporation of solutions''' can only be used for:
*[[Separating Mixtures|Separating]] a [[solution]] to recover [[solute]]s from the [[solution]]s.
*[[Separating Mixtures|Separating]] [[insoluble]] [[solid]]s from a [[liquid]]. However, this is unnecessary as it can be done by [[filtration]].
'''Evaporation of solutions''' cannot be used for:
*Recovering the [[solvent]] from a [[solution]] - [[Distillation]]
*[[Separating Mixtures|Separating]] two [[solute]]s from each other in [[solution]] - [[Chromatography]]
*[[Separating Mixtures|Separating]] an [[insoluble]] [[solid]] from a [[soluble]] [[solid]] - [[Filtration]]
*[[Separating Mixtures|Separating]] two [[solvent]]s from each other in [[solution]] - [[Fractional Distillation]]