Atomic Theory

  • Period: 490 to

    Atomic Theory

  • 492


    Demoritus believed that all matter was made out of substances that could not be divided.
  • John Dalton

    John Dalton found that when elements such as hydrogen and oxygen combine, they always in certain ratios.
  • JJ Thomson

    Thomson believed that all matter is made of indivdual particals called atoms, which cannot be divided.
  • Marie Curie

    Marie hypothesized that radiation doesn't come from the molecule it comes from the atom.
  • Max Plunck

    he became considered the inventor of the quantom theory.
  • Ernest Rutherford

    rutherford fired atoms though gold foil and found out that atoms have parts of atoms that are free and some parts are solid