OCR Gateway Chemistry the history of atoms

HideShow resource information
  • Created by: abc
  • Created on: 20-05-13 19:46
View mindmap
  • The History of the Atom
    • Dalton
      • thought atoms were solid spheres
      • disproved by JJ Thomson
        • Thomson's measurements of charge and mass showed that atoms must contain electrons
          • this is known as the 'plum pudding model'
    • Rutherford
      • Rutherford, Geiger and Marsden conducted the gold foil experiment
        • they fired positive particles at a sheet of gold
          • What was expected: particles deflected
          • What happened: most particles passed through
            • Most of the particles passed through empty space
              • Some were deflected by the nucleus
    • Bohr
      • suggested that atoms have shells
        • supported by many experiments


No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all Atoms and compounds resources »