What is an isotope, Atoms same protons different neutrons, What makes a nucleus radioactive, It is unstable, How does radioactive decay happen, Randomly and spontaneously, What are alpha particles, Helium nuclei, What are beta particles, Fast electrons, What is gamma radiation, High-energy electromagnetic wave, What stops alpha radiation, Paper or a few centimetres of air, What stops beta radiation, Aluminium or several metres of air, What stops gamma radiation best, Lead, What is background radiation, Radiation detected with no source, Name one natural source of background radiation, Cosmic rays,rocks, leakage from medical equipment, Why is radioactivity dangerous to cells, It causes ionisation, What does half-life mean, Time for activity to halve, What is nuclear fission, Splitting a large nucleus, What is nuclear fusion, Joining small nuclei together
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Radioactivity
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Omontgomery139
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