Year 11 · SACE Stage 1
Nuclear models and radioactivity
Practise nuclear composition, decay equations, radiation properties, half-life and nuclear reactions.
Subtopics
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Nuclei, isotopes and stability
Read nuclear notation and classify isotope relationships.
Not attempted8 questionsAlpha, beta and gamma decay equations
Conserve nucleon number and charge in nuclear decay.
Not attempted8 questionsIonisation, penetration and protection rules
Classify alpha, beta and gamma properties without treating penetration as the only risk.
Not attempted8 questionsHalf-life and activity calculations
Read exponential decay and subtract background count rates.
Not attempted8 questionsRadioactive dating and decay fractions
Calculate ages under stated closed-system assumptions and compare remaining activity.
Not attempted8 questionsFission, chain reactions and mass–energy
Identify reactor component functions and calculate fission energy from mass difference.
Not attempted8 questionsFusion and nuclear-reaction balances
Balance fusion reactions and calculate released energy under supplied assumptions.
Not attempted8 questions