Skip to content
    Combined Science GCSE

    Halving of nuclei number and count rate

    What Halving of nuclei number and count rate means in Combined Science GCSE, as defined for AQA.

    Definition of Halving of nuclei number and count rate

    Check what you remember

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

    Reference: AQA

    After each half-life the number of nuclei of the isotope halves, and the count rate or activity falls to half its initial level.
    AQA · Half-lives and the random nature of radioactive decay (study guide)

    Topics that use Halving of nuclei number and count rate

    Related terms

    Using Halving of nuclei number and count rate 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 Combined Science 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 Combined Science GCSE terms