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Physics 0625

5. Nuclear physics

The nuclear model of the atom, isotopes, radioactive decay, half-life and safety.

  1. 5.1

    The nuclear model of the atom

    Protons, neutrons and electrons, nuclide notation, isotopes and the alpha-scattering evidence.

    Full lesson2 questions5 cards
    • 5.1.1Describe the structure of the atom in terms of a nucleus containing protons and neutrons, surrounded by electrons.
    • 5.1.2Use nuclide notation and define proton number and nucleon number.
    • 5.1.3Describe how the alpha-particle scattering experiment supports the nuclear model.
  2. 5.2

    Radioactivity

    Background radiation, alpha, beta and gamma emission, decay equations, half-life, safety and uses.

    Full lesson2 questions3 cardsSimulationReview first: 5.1
    • 5.2.1Describe the nature, penetrating power and ionising ability of alpha, beta and gamma radiation.
    • 5.2.2Define half-life and use decay curves to determine it.
    • 5.2.3Balance nuclear equations for alpha and beta decay.
    • + 1 more objectives