Atom

Kaylee Mosteller's Atom Timeline

  • Dalton: Solid Sphere Model

    Dalton: Solid Sphere Model
    John Dalton's solid sphere model was also known as the Billard Ball Model. The English chemist used experiments to come up with the atomic theory of matter. 1803-1805
  • Thomson: The Plum Pudding Model

    Thomson: The Plum Pudding Model
    JJ Thomson created the Plum Pudding Model. Atoms were made from a positively charged substance with negatively charged electrons scattered about. The looked like raisins in pudding, so he called it The Plum Pudding Model.1897-1903
  • Rutherford: The Nuclear Model

    Rutherford: The Nuclear Model
    1912 Rutherford's Nuclear Model- the nucleus is very small, dense, and positively charged. Electrons surround the nucleus and most of the atom is empty space.
  • Borh: The Borh (Planetary) Model

    Borh: The Borh (Planetary)  Model
    The Bohr Model is a planetary model in which the negatively-charged electrons orbit a small, positively-charged nucleus similar to the planets orbiting the Sun.
  • Erwin Schrodinger: Quantum Mechanics Model

    Erwin Schrodinger: Quantum Mechanics Model
    Schrödinger used mathematical equations to describe the likelihood of finding an electron in a certain position. Electrons are found in an electron cloud or orbital.
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