Skip to content
    Chemistry GCSE

    Addition reaction

    What Addition reaction means in Chemistry GCSE, as defined for AQA.

    Definition of Addition reaction

    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

    A reaction in which bromine adds across the carbon–carbon double bond of an alkene, so the orange colour is decolourised and the mixture turns colourless.
    AQA · Cracking and alkenes (study guide)

    Topics that use Addition reaction

    Related terms

    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 Chemistry questions

    Create a free account to answer exam-style questions on this topic and get feedback on your answers.

    Start free

    A week of Premium from your first lesson · Then the free plan continues · No card, no charge

    All Chemistry GCSE terms