Atomic timeline

By chard
  • 400


    He thought everything was made up of tiny things called atoms
  • 400


    He thought that Democritus idea was wrong and that everythings was made up of the 4 elements
  • Period: 400 to


  • Isaac Newton

     Isaac Newton
    Proposed a mechanical universe with small solid masses in motion.
  • Antione Lavoisier

    Antione Lavoisier
    He stated that elements are simple substances that can't be broken down
  • Joseph Proust

    Joseph Proust
    He stated that the composition of a substance will always be the same
  • John Dalton

    John Dalton
    Proposed theory of multiple proportions
  • JJ Thomson

    JJ Thomson
    He discovered the electron and the plum pudding model
  • Max Planck

    Max Planck
    stated quantum theory
  • Albert Einstein

    Albert Einstein
    Stated the theory of relativity
  • Ernest Rutherford

    Ernest Rutherford
    Discovered the orbital theory of the atom
  • Niels Bohr

    Niels Bohr
    Quantum Theory of Matter
  • James Chadwick

    James Chadwick
    Discovered the Neutron