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HomePearson Edexcel International IGCSE PhysicsRadioactivity and Particles
Pearson Edexcel International · IGCSE · Physics · Revision Notes

Radioactivity and Particles

56 words · Last updated July 2026

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What you'll learn

Nuclear radiation and particles.

Key ideas

  • Alpha, beta, gamma: ionising power and penetration.
  • Half-life and random decay; fission and fusion.

Exam tips

  • Rank radiations by penetration.
  • Use half-life to find fraction remaining.

Common mistakes

  • Confusing alpha and gamma.
  • Mixing up fission and fusion.
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