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    Combined Science GCSE

    Standard form and powers of ten

    What Standard form and powers of ten means in Combined Science GCSE, as defined for AQA.

    Definitions of Standard form and powers of ten

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    Reference: AQA

    A size is written as A × 10ⁿ, where A is between 1 and 10, so the powers n can be compared.
    AQA · Eukaryotes and prokaryotes (study guide)
    In calculations, 0.1 nm becomes 1 x 10⁻¹⁰ m when written using powers of ten.
    AQA · Size and mass of atoms (study guide)

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