THE ATOM AS WE KNOW IT (April 18, 2021) by: Amanda Sabo

  • John Dalton - Solid Sphere Model

    John Dalton - Solid Sphere Model
    Based his model on the law of conservation of mass and the law of constant composition.
  • J.J Thomson - Plum Pudding Model

    J.J Thomson - Plum Pudding Model
    The plum pudding model of the atom had negatively-charged electrons embedded within a positively-charged "soup."
  • Ernest Rutherford - The Nuclear Model

    Ernest Rutherford - The Nuclear Model
    His gold foil experiment showed that the atom is mostly empty space with a tiny, dense, positively-charged nucleus. So from those results he proposed The Nuclear Model.
  • Period: to

    Niels Bohr - The Bohr (Planetary) Model

    In the planetary model the electrons revolved around a positively charged nucleus like the rings around Saturn—or alternatively, the planets around the sun.
  • Erwin Schrodinger - Quantum Mechanics Model

    Erwin Schrodinger - Quantum Mechanics Model
    In the quantum mechanical model of the atom, which treats electrons as matter waves. The electrons have an intrinsic property called spin, and an electron can have one of two possible spin values: spin-up or spin-down, and any two electrons occupying the same orbital must have opposite spins.