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    Chemistry A-Level

    Order

    What Order means in Chemistry A-Level, as defined for OCR.

    Definitions of Order

    Exam boards and our study guides word this term in slightly different ways. Learn the version your board uses.

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

    Reference: OCR

    The superscript m or n with respect to a reactant, taking a value of 0, 1 or 2 and found by experiment, not from the balanced equation.
    OCR · How fast?
    The power to which a reactant's concentration is raised in the experimentally determined rate equation.
    OCR · How fast?

    Topics that use Order

    Related terms

    Using Order 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.

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    All Chemistry A-Level terms