The History Of the Atom

The History Of the Atom

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  • Democritus
  • John Dalton
  • J.J Thomson
  • He thought an atom was the smallest piece of matter. He named it an Atom, or uncuttable.
  • Earnest Rutherford
  • He thought atoms were indestructible pieces of matter. He also thought that all atoms have the same shape. He also thought that atoms can only be combined in whole numbers.
  • Niels Bohr
  • J.J Thomson used a cathode ray on an atom. Using this, he discovered that there are smaller parties surrounding. These particles are called Electrons
  • Earnest Ruthford fired a laser at a pice of gold foil. In doing so, the light reflected in multiple different directions. This caused the assumption that the electrons were scattered around the nucleus.
  • Niels Bohr's model shows that electrons orbit around a nucleus. They rotate in a pattern similar to that of planets around a star.
  • The modern diagram of the atom depicts that electrons fly randomly around the nucleus.
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