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The history of the atomic model

By peternadin
  • 460

    Democritus discovers the atom

    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.