Three types of chemical reaction
I can use chemical equations to identify and describe oxidation, decomposition and precipitation reactions.
Three types of chemical reaction
I can use chemical equations to identify and describe oxidation, decomposition and precipitation reactions.
Lesson details
Key learning points
- In a chemical reaction the + symbol can be read as ‘and’ and the arrow as ‘changes into’.
- In an oxidation reaction a reactant combines with oxygen.
- In a decomposition reaction a reactant splits into two or more new substances.
- In a precipitation reaction an insoluble salt is formed.
Common misconception
Pupils *very* easily confuse different types of reactions.
Spend time developing ways to help pupils remember the differences and regularly challenge them to explain why one reaction is the type it is.
Keywords
Chemical equation - A chemical equation describes a reaction, indicating the reactants and products.
Oxidation - Oxidation is a type of reaction in which oxygen bonds to elements of the reactants.
Decomposition - Decomposition is a type of reaction in which a reactant compound breaks down into two or more products.
Precipitation - A reaction in which an insoluble salt forms from two solutions is called a precipitation reaction.
Content guidance
- Equipment requiring safe usage.
Supervision
Adult supervision recommended.
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Video
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