Skip to content
    Chemistry A-Level

    proportion exceeding Eₐ

    What proportion exceeding Eₐ means in Chemistry A-Level, as defined for AQA.

    Definition of proportion exceeding Eₐ

    Check what you remember

    Read the wording for your board, then hide it and explain proportion exceeding Eₐ in your own words. Rough notes are fine. This is a self-check, with no mark or grade.

    Reference: AQA

    The fraction of particles with energy greater than or equal to Eₐ rises steeply, and it is this fraction that multiplies up the number of successful collisions.
    AQA · Effect of temperature on reaction rate (study guide)

    Topics that use proportion exceeding Eₐ

    Related terms

    Using proportion exceeding Eₐ 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 A-Level terms