Addition reaction
What Addition reaction means in Combined Science GCSE, as defined for AQA.
Definitions of Addition reaction
Exam boards and our study guides word this term in slightly different ways. Learn the version your board uses.
Check what you remember
Read the wording for your board, then hide it and explain Addition reaction in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
The reaction in which the C=C double bond reacts with bromine, so the orange colour is decolourised and the mixture turns colourless.
A reaction in which bromine adds across the carbon–carbon double bond, breaking the double bond.
Topics that use Addition reaction
- Cracking and alkenes (AQA GCSE)
Related terms
- Alkane
- Alkenes
- Bromine water
- Catalytic cracking
- Cracking
- Cracking of hydrocarbons
- Fractional distillation
- Fuels and energy resources
Using Addition reaction in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
Practise Combined Science questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
A week of Premium from your first lesson · Then the free plan continues · No card, no charge