History of the atom by jordan

By PMurphy
  • 400

    Democrtus'

    Democrtus'
    Proposed that matter was made up of small unbraekable parts.
  • 400

    Aristotle

    Aristotle
    Stated that all substance are made up of 4 elements Fire,Water,Air,and Earth

  • John Dalton

    John Dalton
    Transformed Democritus ideas on atom into a atomic model

  • J.J Thompson

    J.J Thompson
    Discovered the electron,conducted theray tube experment

  • Robert Millikan

    Robert Millikan
    Determined the amount and chargeof the electron

  • Ernest Rutherford

    Ernest Rutherford
    Discovered the nucleas

  • Neis bohr

    Neis bohr
    Proposed that an electrions are found only in a specfic cirular path, or don't go around the nucles.

  • Sir james chadwick

    Sir james chadwick
    Comfirmed the existece of the neutron in the nucles