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    Chemistry GCSE

    Chemical Formula

    What Chemical Formula means in Chemistry GCSE, as defined for Pearson Edexcel.

    Definition of Chemical Formula

    A representation of a substance using symbols for its constituent elements, showing the ratio of atoms of each element present.
    Pearson Edexcel · Formulae, equations and hazards (study guide)

    Topics that use Chemical Formula

    Related terms

    Using Chemical Formula in the exam

    Definition questions usually carry one or two marks, and examiners look for the precise wording. Write the definition from memory, check it against the version above, and then use the term in a longer answer on the same topic so it sticks.

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    All Chemistry GCSE terms