2,903
edits
Changes
no edit summary
==Key Stage 2==
===Meaning===
[[Separating Mixtures]] is when you take out one of the substances [[substance]]s from a [[mixture]].
===About Separating Mixtures===
: Different mixtures [[mixture]]s need to be '''separated ''' in different ways:
*Sieving
*[[Filtering]]*[[Evaporation of Solutions|Evaporating]]
===Examples===
{| class="wikitable"
|-
| style="height:20px; width:200px; text-align:center;" |Beach
| style="height:20px; width:200px; text-align:center;" |Muddy Puddle
| style="height:20px; width:200px; text-align:center;" |Sea Water
|-
|[[File:PebblesandSand.png|center|200px]]
|[[File:MuddyPuddle.png|center|200px]]
|[[File:Sea.png|center|200px]]
|-
| style="height:20px; width:200px; text-align:center;" |You can separate the sand from the pebbles with a sieve.
| style="height:20px; width:200px; text-align:center;" |You can separate mud from water in the puddle with filter paper and a funnel.
| style="height:20px; width:200px; text-align:center;" |You can separate salt from the water by evaporating the water in an evaporating dish.
|-
|[[File:Sieve.png|center|200px]]
|[[File:Filter.png|center|200px]]
|[[File:EvaporatingDish.png|center|200px]]
|}
==Key Stage 3==
===Meaning===
[[Separating Mixtures]] is when you take out one or more of the [[substance]]s from a [[mixture]].
===About Separating Mixtures===
: All [[mixture]]s can be '''separated''' without a [[Chemical Reaction|chemical reaction]].
: There are several methods of '''separating mixtures''' that you should know:
*[[Filtration]]
*[[Evaporation of Solutions|Evaporation]]
*[[Distillation]]
*[[Chromatography]]
===Examples===
{| class="wikitable"
|-
| style="height:20px; width:200px; text-align:center;" |'''Filtration'''
| style="height:20px; width:200px; text-align:center;" |'''Evaporation'''
|-
|[[File:Filtration.png|center|300px]]
|[[File:EvaporatingClipart.png|center|300px]]
|-
| style="height:20px; width:200px; text-align:center;" |A [[mixture]] or a [[liquid]] and an [[insoluble]] [[solid]] can be '''separated''' by [[filtration]].
| style="height:20px; width:200px; text-align:center;" |A [[solute]] can be recovered from a [[solution]] by [[evaporating]] away the [[solvent]].
|-
| style="height:20px; width:200px; text-align:center;" |'''Distillation'''
| style="height:20px; width:200px; text-align:center;" |'''Chromatography'''
|-
|[[File:Distillation.png|center|300px]]
|[[File:ChromatographyDiagram.png|center|300px]]
|-
| style="height:20px; width:200px; text-align:center;" |The [[solute]] and [[solvent]] can be '''separated''' by [[distillation]].
| style="height:20px; width:200px; text-align:center;" |When there are more than 1 [[solute]]s in a [[solution]] [[chromatography]] can '''separate''' them.
|}
==Key Stage 4==
===Meaning===
To '''separate a mixture''' is to remove one or more [[chemical]]s from a [[mixture]] of [[chemical]]s.
===About Separating Mixtures===
: Techniques to '''separate mixtures''' are usually used to obtain [[pure]] samples of a [[chemical]].
Different '''separation''' techniques are needed for different types of [[mixture]]:
*[[Filtration]] - To remove an [[insoluble]] [[solid]] from [[mixture]] with a [[liquid]].
*[[Evaporation of Solutions|Evaporation]] ([[Evaporation of Solutions|Crystallisation]]) - Collecting a [[solute]] from a [[solution]] while losing the [[solvent]].
*[[Distillation]] - Collecting both the [[solute]] and [[solvent]] from a [[solution]].
*[[Fractional Distillation]] - Collecting different [[solvent]]s from the same [[solution]].
*[[Chromatography]] - '''Separating''' two or more [[solute]]s in [[solution]].
*[[Centrifuge]] - '''Separating''' [[substance]]s in a [[mixture]] by their [[density]].
===Extra Information===
{{#ev:youtube|https://www.youtube.com/watch?v=q8Ent5CXhfY}}
===References===
====Edexcel====
:[https://www.amazon.co.uk/gp/product/1782945741/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945741&linkCode=as2&tag=nrjc-21&linkId=30da4f2178da182547b62a7329d13b57 ''Separating mixtures, pages 100-102, GCSE Combined Science; The Revision Guide, CGP, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1782945725/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945725&linkCode=as2&tag=nrjc-21&linkId=694be7494de75af3349537d34e13f7f0 ''Separating mixtures, pages 37-39, GCSE Chemistry; The Revision Guide, CGP, Edexcel '']
====OCR====
:[https://www.amazon.co.uk/gp/product/1782945679/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945679&linkCode=as2&tag=nrjc-21&linkId=a2db42f7b4bdf10cafaafa3bb9120940 ''Separating mixtures, pages 27-29, Gateway GCSE Chemistry; The Revision Guide, CGP, OCR '']
:[https://www.amazon.co.uk/gp/product/1782945695/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945695&linkCode=as2&tag=nrjc-21&linkId=ceafcc80bcad6b6754ee97a0c7ceea53 ''Separating mixtures, pages 99-103, Gateway GCSE Combined Science; The Revision Guide, CGP, OCR '']