Rutherfords Alpha scattering experiment

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  • Created by: Iqra.B
  • Created on: 20-12-14 10:34
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  • Alpha scattering experiment (Rutherford)
    • Fired Alpha particles at thing gold foil
      • Most went through- detected when they hit zinc sulfide screen
        • Some alpha particles came straight back
    • plum-pudding model results...
      • 1) Some particles bounced back - small positively charged nuclei - repelled particles
        • Rutherford's nuclear model of the atom says: -most of the mass must be concentrated at the centre, and most of an atom is empty space.
          • Nucleus must be small and positive
            • Faster travelling particle - less deflected.
              • More positively charged nucleus - more particles deflected
                • More close the particle passes to the nucleus - more it will be deflected
  • removed air from the apparatus so: - Ionization doesn't occur and collision between alpha and air particles
    • Fired Alpha particles at thing gold foil
      • Most went through- detected when they hit zinc sulfide screen
        • Some alpha particles came straight back
  • Faster travelling particle - less deflected.
    • More positively charged nucleus - more particles deflected
      • More close the particle passes to the nucleus - more it will be deflected

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