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Reaction Profile

Key Stage 4

Meaning

A reaction profile is a simple graph showing the energy change which takes place as a reaction progresses.

About Reaction Profiles

Reaction profiles can show the activation energy needed for a chemical reaction to begin.
The reaction profile can be used to show whether a reaction is exothermic or endothermic.

Examples

ExothermicSketchGraphKS4.png
EndothermicSketchGraphKS4.png
The reaction profile for an exothermic reaction can be identified by the fact that the products have less energy than the reactants. The reaction profile for an endothermic reaction can be identified by the fact that the products have more energy than the reactants.


References

AQA

Reaction profiles, pages 116-117, 136, GCSE Chemistry; Third Edition, Oxford University Press, AQA
Reaction profiles, pages 131-3, GCSE Chemistry, Hodder, AQA
Reaction profiles, pages 136, 139, GCSE Combined Science; The Revision Guide, CGP, AQA
Reaction profiles, pages 155, 156, 167, GCSE Combined Science Trilogy; Chemistry, CGP, AQA
Reaction profiles, pages 180, 181, 199, GCSE Chemistry, CGP, AQA
Reaction profiles, pages 232-3, 235, GCSE Combined Science Trilogy 1, Hodder, AQA
Reaction profiles, pages 62, 68, GCSE Chemistry; The Revision Guide, CGP, AQA

Edexcel

Reaction profiles, pages 133, 134, GCSE Combined Science; The Revision Guide, CGP, Edexcel
Reaction profiles, pages 142, 144, 146, GCSE Chemistry, Pearson, Edexcel
Reaction profiles, pages 244, 245, GCSE Chemistry, CGP, Edexcel
Reaction profiles, pages 82, 83, GCSE Chemistry; The Revision Guide, CGP, Edexcel

OCR

Reaction profiles, pages 104-105, Gateway GCSE Chemistry, Oxford, OCR
Reaction profiles, pages 111, 132, Gateway GCSE Combined Science; The Revision Guide, CGP, OCR
Reaction profiles, pages 41, 72, Gateway GCSE Chemistry; The Revision Guide, CGP, OCR