Radioactivity

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  • Radioactivity
    • 3 types
      • Alpha
        • These are particles
          • Beta
            • Electrons that come from the nucleus
        • Double positive particles
      • Beta
        • Electrons that come from the nucleus
      • Gamma
        • Form of energy
    • Radioactive emissions happen when some nuclei of an element are unstable
    • Background radiation is everywhere all of the time. It comes from natural sources.
    • Isotopes are atoms of an element with the same number of protons and electrons but a different number of neutrons
    • An ion is an atom with an electrical charge
    • Ionising is where you give an atom an electron or take one away
      • Once something is an ion, it is reactive.
        • It can reactive with oxygen in the body to cause a mutation in your DNA. This can cause cancer

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