Skip to content
    Chemistry GCSE

    Empirical formula

    What Empirical formula means in Chemistry GCSE, as defined for AQA.

    Definition of Empirical formula

    Check what you remember

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

    Reference: AQA

    The simplest whole-number ratio of cations to anions in the diagram, found by counting the ions.
    AQA · Ionic compounds (study guide)

    Topics that use Empirical formula

    Related terms

    Using Empirical formula 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