gailey atomic project

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  • 1. atoms are tiny, invisible particles. 2. atoms of one element are all the same 3.atoms of different elemnts are different 4.compounds form by combining atoms
  • John Dalton created the first atomic theory. His theory had 4 statements...
  • J.J Thomson discovered electrons, he also did the cathode ray tube experiment.
  • Negative charges spread out in a sea of positive charge
  • ATOMS ARE MOSTLY EMPTY SPACE
  • Rutherford discovered the protons and the nucleus, he also made the gold foil experiment.
  • He proposed that electrons move around the nucleus in specific layers, or shells. James Chadwick discovered particles with no charge he called it neutrons
  • Electron are in clouds called orbital
  • It is impossible to know where an electron is located at any given time
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