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==Key Stage 3==
===Meaning===
A [[Word '''word Equation]] ''' is a way of representing [[Chemical Reaction|chemical reactions]] to show the [[Reactant|reactants]] and [[Product|products]] using wordsthe names of the [[chemical]]s.
===About Word Equations===
: In a word equation the [[reactant]]s are on the left and the [[product]]s are on the right.
{| class="wikitable"
|-
|[[File:ReactantsProducts.png|center|400px]]
|}
: Word equations can be used to show the names of [[chemical]]s before and after [[Chemical Reaction|reactions]] but they do not show the numbers of [[molecule]]s or the number of [[atom]]s in each [[molecule]]. For that information you need a [[Balanced Symbol Equation]].
===Examples===
{| class="wikitable"
|-
|[[File:Hydrogen+Oxygen=Water.png|center|500px]]
|-
|[[File:Methane+Oxygen.png|center|500px]]
|-
|[[File:Magnesium+Oxygen=MagnesiumOxide.png|center|500px]]
|-
|[[File:HydrochloricAcid+LithiumOxide.png|center|500px]]
|}
==Key Stage 4==
===Meaning===
A '''word equation''' is a way of representing [[Chemical Reaction|chemical reactions]] to show the [[Reactant|reactants]] and [[Product|products]] using the names of the [[chemical]]s.
===About Word Equations===
: In a word equation the [[reactant]]s are on the left and the [[product]]s are on the right.
===Examples===
====Combustion Reactions====
These [[combustion]] [[Chemical Reaction|reactions]] involve [[Electron Sharing|electron sharing]].
: [[Methane]] + [[Oxygen]] → [[Carbon Dioxide]] + [[Water]]
: [[Ethane]] + [[Oxygen]] → [[Carbon Dioxide]] + [[Water]]
: [[Propane]] + [[Oxygen]] → [[Carbon Dioxide]] + [[Water]]
====Oxidation Reactions====
[[Oxidation]] [[Chemical Reaction|reactions]] involve [[Electron Transfer|electron transfer]].
: [[Magnesium]] + [[Oxygen]] → [[Magnesium Oxide]]
: [[Aluminium]] + [[Oxygen]] → [[Aluminium Oxide]]
: [[Iron]] + [[Oxygen]] → [[Iron Oxide]]
====Displacement Reactions====
[[Displacement Reaction|Displacement]] [[Chemical Reaction|reactions]] involve [[Electron Transfer|electron transfer]].
: [[Copper Sulphate]] + [[Magnesium]] → [[Magnesium Sulphate]] + [[Copper]]
: [[Iron Chloride]] + [[Calcium]] → [[Calcium Chloride]] + [[Iron]]
: [[Lithium Hydroxide]] + [[Potassium]] → [[Potassium Hydroxide]] + [[Lithium]]
: [[Iron Oxide]] + [[Aluminium]] → [[Aluminium Oxide]] + [[Iron]]
====Neutralisation Reactions====
[[Neutralisation]] [[Chemical Reaction|reactions]] involve [[Proton Transfer|proton transfer]].
: [[Hydrochloric Acid]] + [[Lithium Oxide]] → [[Lithium Chloride]] + [[Water]]
: [[Hydrochloric Acid]] + [[Iron Oxide]] → [[Iron Chloride]] + [[Water]]
: [[Sulphuric Acid]] + [[Potassium Hydroxide]] → [[Potassium Sulphate]] + [[Water]]
: [[Sulphuric Acid]] + [[Aluminium Hydroxide]] → [[Aluminium Sulphate]] + [[Water]]
: [[Nitric Acid]] + [[Magnesium Carbonate]] → [[Magnesium Nitrate]] + [[Carbon Dioxide]] + [[Water]]
: [[Nitric Acid]] + [[Titanium Carbonate]] → [[Titanium Nitrate]] + [[Carbon Dioxide]] + [[Water]]
====Thermal Decomposition Reactions====
[[Thermal Decomposition]] [[Chemical Reaction|reactions]] involve both [[Electron Sharing|electron sharing]] and [[Electron Transfer|electron transfer]].
: [[Calcium Carbonate]] → [[Calcium Oxide]] + [[Carbon Dioxide]]
: [[Copper Carbonate]] → [[Copper Oxide]] + [[Carbon Dioxide]]
: [[Zinc Carbonate]] → [[Zinc Oxide]] + [[Carbon Dioxide]]
===References===
====AQA====
:[https://www.amazon.co.uk/gp/product/1782945962/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945962&linkCode=as2&tag=nrjc-21&linkId=476bb5c8d1dfb5c08ac81b6d4d1c98d8 ''Word equations, page 31, GCSE Chemistry, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/178294639X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=178294639X&linkCode=as2&tag=nrjc-21&linkId=51599bb45a2bfaf7c1b6a978b2ca2616 ''Word equations, page 31, GCSE Combined Science Trilogy; Chemistry, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/0198359381/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359381&linkCode=as2&tag=nrjc-21&linkId=47c8d1ae58d8b3a5e2094cd447154558 ''Word equations, page 6, GCSE Chemistry; Third Edition, Oxford University Press, AQA '']
====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 ''Word equations, page 12, GCSE Chemistry; The Revision Guide, CGP, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1782948147/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948147&linkCode=as2&tag=nrjc-21&linkId=f63dcd8345f4e49c717b39a228a36c7c ''Word equations, page 22, GCSE Chemistry, CGP, 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 ''Word equations, page 75, GCSE Combined Science; The Revision Guide, CGP, Edexcel '']
====OCR====
:[https://www.amazon.co.uk/gp/product/0198359829/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359829&linkCode=as2&tag=nrjc-21&linkId=90e8d7b4f039d53035238fa0320fe00b ''Word equations, page 92, Gateway GCSE Chemistry, Oxford, OCR '']