Skip to content
    Chemistry A-Level

    Determination of units by unit cancellation

    What Determination of units by unit cancellation means in Chemistry A-Level, as defined for OCR.

    Definition of Determination of units by unit cancellation

    Check what you remember

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

    Reference: OCR

    Found by cancelling the units of the numerator against those of the denominator, recognising when the expression is dimensionless.
    OCR · How far?

    Topics that use Determination of units by unit cancellation

    Related terms

    Using Determination of units by unit cancellation 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