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  • 1. Atoms are tiny, invisible particles 2.Atoms of one element are all the same 3. Atoms of different elements are different 4. Compounds from by combining atoms
  • JOHN DALTON
  • DEVELOPMENT OF ATOMIC STRUCTURE
  • John Dalton created the first atomic theory and it has 4 statements.
  • J.J THOMSON
  • DEVELOPMENT OF ATOMIC STRUCTURE
  • The Raisin Bun Model; the positive particle is like the dough in a bun. The negative charged electrons are inside the positive dough.
  • J.J. Thomson discovered electrons and showed that the atoms was made of smaller things. He also used the Raisin Bun Model.
  • DEVELOPMENT OF ATOMIC STRUCTURE
  • ERNEST RUTHERFORD
  • He worked on a experiment called the Gold Foil Experiment. He used alpha particle which is positive and the result are others went through, others got hit and went through and others got reflected.
  • Ernest Rutherford discovered protons(positive) and the nucleus(at the center).
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