Atom

The History of the Atomic Model

By voice_like_gold
  • Period: to

    Dalton came up with the Atomic Theory

    Dalton came up with the Atomic Theory somewhere in the early 1800s. The theory is as follows:
    1. All matter is made of atoms. Atoms are indivisible and indestructible
    2. All atoms of a given element are identical in mass and properties
    3. Compounds are formed by a combination of two or more different kinds of atoms
    4. A chemical reaction is a rearrangement of atoms.
    more info at Dalton's Theory

  • Thompson Determines That Electrons are a part of Cathode Rays

    Thompson then concluded that electrons were a part of atoms.
  • Thompson Wins the Nobel Prize

    Thompson Wins the Nobel Prize

    J.J. Thompson wins the 1906 nobel prize.

  • Rutherford Performs His Gold Experiment

    Rutherford shot Alpha Rays through a sheet of gold foil to try and understand an atom better. What he found was that most of the atom's mass is in it's nucleus.

  • Bohr Joins Rutherford

    Bohr joins Rutherford in his resaerch, claiming that his theory in incorrect. According to laws of physics, the atom should collapse on itself based on Rutherford's theory.

  • Bohr publishes his own theory

    Bohr publishes his theory about the atom model, looking to Planck's Quantum Theory for a guide.

  • Bohr wins the Nobel Prize in Physics