P6 Brief Notes

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  • Created by: cg97
  • Created on: 09-03-13 21:10

P6 – Radioactive Materials

  • Atoms consist of a nucleus plus orbiting electrons
  • The number of neutrons in an element isn’t fixed
  • Radioactive elements emit ionising radiation
  • Alpha radiation is slow and heavy
  • Beta radiation is lighter and more penetrating
  • Gamma radiation is an electromagnetic wave
  • The radioactivity of a sample always decreases over time
  • Rutherford’s scattering showed that atoms have a positive nucleus
  • The


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