Atom History

  • Democritus
    460

    Democritus

    he believed that atoms were the smallest form of matter. this piece was indevisible and formed everything in the world.to him an atom was a small round ball. this was alos the first model ever thought of. his main contributions were through philisophy, rather than science
  • Antoine Lavoisier

    Antoine Lavoisier

    he created the law of conversation hich states that matter cannot be created or destroyed.
  • John Dalton

    John Dalton

    he said that atoms are both indestrictuable and indivisible. he also said that all atoms of a certian elements are identical.
  • J.J. Thompson

    J.J. Thompson

    he thought that the atomic model was similar to a piece of rasian bread. he believed the atoms to be a spherical shape with electrons confined inside
  • Max Planck

    Max Planck

    he gave way to the quantam mechanics theory.
  • Robert Millik

    Robert Millik

    he preformed the oil drop expariment which helped determine the ss and charge of an electron
  • Ernest Rutherford

    Ernest Rutherford

    he believed that there was a solid nucleus that was surrounded by electrons and the rest of the atom was empty space
  • Niels Bohr

    Niels Bohr

    he applied quantum theory to rutherfords atomic structure. he came up with the electron ring
  • Henry Mosely

    Henry Mosely

    he came up with the first peridoic table model.
  • Aristotle

    Aristotle

    he is most known for his acchievements in philisophy. he believed that the smallest particles could always be cut in half again and again and that the matter will contine ro shrink in size