Skip to content
    Chemistry A-Level

    Heterogeneous and homogeneous catalysis

    What Heterogeneous and homogeneous catalysis means in Chemistry A-Level, as defined for OCR.

    Definition of Heterogeneous and homogeneous catalysis

    Check what you remember

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

    Reference: OCR

    Heterogeneous catalysts provide a surface on which reactant molecules adsorb, weaken their bonds and react, while homogeneous catalysts form intermediate complexes that react further and regenerate the catalyst.
    OCR · Transition elements

    Topics that use Heterogeneous and homogeneous catalysis

    Related terms

    Using Heterogeneous and homogeneous catalysis 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