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The history of the atomic model

  • Democritus discovers the atom
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    Democritus discovers the atom

  • John Dalton changes the theory

    John Dalton changes the theory

    suggested that matter was made of small sphere objects called atoms
  • Joseph John Thompson

    Joseph John Thompson

    discovered electrons that sometimes flew out of the atom
  • Thompson creates the 'plum pudding' model

    Thompson creates the 'plum pudding' model

    Thought that electrons were scatter in a large ball of a positively charged substance.
  • Ernest Rutherford

    Ernest Rutherford

    Found that atoms are most empty air
  • Niels Bohr

    Niels Bohr

    Discovered that electrons were in orbits similar to planets
  • James discovers Nucleus' have neutrons and protrons

    James discovers Nucleus' have neutrons and protrons

  • Modern Atom

    Modern Atom

    The understanding of atoms is always changing. We now view the electrons as a cloud and that they can never be calculated to be in a certain space.