Atomic structyre

The Historty of Atomic Theory

  • 500

    ANCIENT GREEKS - Empedocles 450BC

    Suggests that all matter was made from combinations of fire, air, water and earth
  • 500

    ANCIENT GREEKS - Democritus 47BC - 40BC

    Proposed that if a sample of matter was cut into smaller and smaller pieces, they would eventually become indivisible. He named them atoms
  • 500

    ANCIENT GREEKS - Aristotle 384BC-322BC

    Matter is continuous and infinitely divisible. Supported Empedocles theory. Said that you could change one material into another by varying the proportions of earth, air, fire and water.
  • Period: 500 to

    History of Atomic Theory

  • JOHN DALTON

  • J.J. THOMPSON

  • ERNEST RUTHERFORD

  • NIELS BOHR

  • JAMES CHADWICK