Atoms Timeline

  • Dalton Solid Sphere Model

    Dalton Solid Sphere Model
    Dalton's Theory was that all elements are made up of atoms that cant be divided or destroyed, all atoms of the same element are alike, atoms of different elements are different,
  • Thomson: The Plum Pudding Model

    Thomson: The Plum Pudding Model
    Thomson's theory was that the atom is made up of electrons surrounded by a soup of positive charge to balance the electrons' negative charges, like plums surrounded by pudding.
  • Rutherford: The Nuclear Model

    Rutherford: The Nuclear Model
    Rutherford's theory was that the atom is a tiny, dense, positively charged core called a nucleus, that electrons move around at a distance much like planets revolving around the Sun.
  • Bohr: The Bohr (Planetary) Model

    Bohr: The Bohr (Planetary) Model
    Bohr's theory was that electrons assume only certain orbits around the nucleus, each orbit has an energy associated with it, and light is released when an electron jumps from a higher orbit to a lower orbit and absorbed when it jumps from a lower to higher orbit.
  • Schrodinger: Quantum Mechanics Model

    Schrodinger: Quantum Mechanics Model
    Schrodinger's theory is the same as Bohr's except it predicts the odds of the location of the electron.
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