View source for Extracting Metals by Electrolysis

==Key Stage 3==
===Meaning===
'''Electrolysis''' is a way to [[Extraction of Metals|extract metals]] from [[mineral]]s when the [[metal]] is more [[Reactivity Series|reactive]] than [[Carbon]].

===About Extracting Metals by Electrolysis===
: [[Metal]]s that are more [[Reactivity Series|reactive]] than [[Carbon]] cannot be [[Displacement Reaction|displaced]] with [[Carbon]] so [[electrolysis]] is used to [[Extraction of Metals|extract]] them.
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|[[File:ElectrolysisCell.png|center|500px]]
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| style="height:20px; width:200px; text-align:center;" |[[Carbon]] [[electrode]]s are used to pass an [[Electrical Current]] through the [[molten]] [[mineral]]. The [[metal]] collects at the [[cathode]] which carries a negative [[Electrical Charge|charge]] and the [[pure]] [[metal]] is removed from the [[Electrolysis Cell|electrolysis cell]].
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==Key Stage 4==
===Meaning===
'''Extraction of metals by electrolysis''' is a method of obtaining a [[metal]] from a [[mineral]].

===About Extracting Metals by Electrolysis===
: '''Electrolysis''' is usually used to [[Extraction of Metals|extract metals]] when the [[metal]] is more [[Reactivity Series|reactive]] than [[Carbon]] or the [[mineral]] is [[soluble]] in [[water]] making it cheaper to '''extract by electrolysis''' than by [[smelting]].