Atomic Timeline

By Bays74S
  • Democritus
    465

    Democritus

    He though that everything is made up of these “atmos” particles that are so small that they can’t be broken down any more.
  • John Dalton

    John Dalton

    John belived that elements are made of extremely small particles called atoms. In chemical reactions, atoms are combined, separated, or rearranged.
  • William Crookes

    William Crookes

    Will invented a tube that he could see particals, and atoms through.
  • J.J. Thomson

    J.J. Thomson

    Thomson experimented with crookes tube, and used a magnet to try to direct the beam.
  • Ernst Rutherford

    Ernst Rutherford

    Rutherford started to work with J. J. Thomson on the conductive effects of X-rays on gases, work which led to the discovery of the electron which Thomson presented to the world in 1897.
  • Neils Bohr

    Neils Bohr

    A negatively charged electron, to an atomic orbital, orbits a small, positively charged nucleus.
  • Aristotle

    Aristotle

    Aristotle thought that everything is made up of four elements; Earth, Wind, Water, and Fire. He also belived in "atmos" a thing like atoms.