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By chuberg45
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    Democritus

    Democritus

  • John Dalton

    John Dalton
    Dalton Proposed the theory that all matter is made up of individual particles called atoms, which cannot be divided.

  • J.J. Thompsan ( Plum Puding )

    J.J. Thompsan ( Plum Puding )
    J.J. Thompsan descovered the electron in 1897

  • Hantaro Nagaoka

    Hantaro Nagaoka

  • Ernest Rutherford

    Ernest Rutherford

  • Bohr Model

    Bohr Model

  • James Chadwick

    James Chadwick