Atomic Theory Timeline

Timeline created by cheese23
  • 440

    Democritus

    Democritus
    Created the Atomic Theory.
  • Antoine Lavoisier

    Antoine Lavoisier
    Named Oxygen and predicted silicon. He also named hydrogen in 1783.
  • John Dalton

    John Dalton
    Was the creator of the modern atomic theory.
  • Robert Millikan

    Robert Millikan
    Measured the charge of an electron. Is also known for the photoelectric effect.
  • Dmitri Mendeleev

    Dmitri Mendeleev
    Created the first periodic table.
  • Cathode Ray Tube

    Cathode Ray Tube
    Was created by J.J. Thomson. It is a vacuum containing an electron gun.
  • J.J. Thomson

    J.J. Thomson
    Discovered electrons, isotopes, and the mass spectrometer.
  • Law of conservation of mass

    Law of conservation of mass
    Was discovered by Antoine Lavoisier. It led to many other discoveries.
  • Daltons Atomic Theory

    Daltons Atomic Theory
    Was discovered by John Dalton. Explained atoms in different elements could be separated by the mass in their weight.
  • Electron Cloud Model

    Electron Cloud Model
    An atom model Where particles are no longer depicted at particles.
  • Ernest Rutherford

    Ernest Rutherford
    Proved that radioactivity has transmutation of one chemical to another.
  • Gold Foil Experiment

    Gold Foil Experiment
    Was done by Hans Geiger. He proved the existence of the atomic nucleus.
  • Plum Pudding Model

    Plum Pudding Model
    Was discovered by J.J. Thomson. It is a model of an atom with randomly placed rings.
  • Rutherford Model

    Rutherford Model
    Was created by Ernest Rutherford. It is a model of an atom.
  • Bohr Planetary model

    Bohr Planetary model
    Created by Neils Bohr. It is the atomic properties and molecular structures.
  • Henry Mosely

    Henry Mosely
    Justified the empirical and chemical concept of the atomic number.
  • Quantum Mechanical Model

    Quantum Mechanical Model
    Created by Werner Heisenburg. It is impossible to record the momentum and the location of the electron.
  • Niels Bohr

    Niels Bohr
    Created understandings of the atomic structure and quantum mechanics.
  • James Chadwick

    James Chadwick
    Discovered the neutron.
  • Erwin Schrodinger

    Erwin Schrodinger
    Developed a number of fundamental outcomes in the field of the quantum theory.
  • Period:
    400
    to

    Atomic Timeline Theory