Models of the atom

  • Dalton Model

    Dalton Model
    British chemist John Dalton concluded that each element is made of atoms that are all alike. He also thought that different elements have atoms of different mass. Dalton imagined atoms as tiny, solid balls.
  • Thompson Model

    Thompson Model
    British Scientist J.J. Thompson discovered the electron. He later proposed a new model, suggesting that an atom is a positively charged sphere with electrons embedded in it. Like a muffin with blue berries in it.
  • Nagaoka Model

    Nagaoka Model
    Japanes Physicist Hantaro Nagaoka proposed a model of the atom that looks like a sphere with things swerling around it like planets.
  • Rutherford Model

    Rutherford Model
    British physicist Ernest Rutherford concluded that the atom is mostly empty space. Electrons spin around it.
  • Bohr Model

    Bohr Model
    Danish Physicist Niels Bohr proposed a model that showed electrons moving i certain layers and shells around the nucleus.
  • Chadwick Model

    Chadwick Model
    British Physicist James Chadwick discovered the neutron. The existence of neutrons explained why atoms weighed more than there total mass of protons and electrons.
  • Present Model

    Present Model
    The cuurrent atomic model results from work done from the 1920's tot he present day.