Physics · IGCSE · Edexcel · Pearson Edexcel International GCSE (9–1) Physics (Linear) — 4PH1 · Specification point · 7.5 · Radioactivity and particles · Radioactivity
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| Students should: |
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7.5 describe the nature of alpha (α) particles, beta (β⁻) particles and gamma (γ) rays, and recall that they may be distinguished in terms of penetrating power and ability to ionise |