Atomic model comic

Atomic model comic

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  • All elements are composed of atoms; atoms are particles. Atoms of the same element are exactly alike and if they are different they do not look alike. 
  • Compounds are formed by the making of atoms from different elements.
  • In 1803, John Dalton, an English chemist, introduced an early atomic theory of matter.
  • I  studied how electricity moved through a gas filled pipe, to which I found that light was made. I placed a magnet around the cathode ray tube causing the light beam to bend. 
  • I found out that electrons were also negatively charged. My atomic model is named the “plum pudding” model. 
  • In 1897, J.J. Thomson, an English physicist, discovered negatively charged electrons using a cathode ray tube.
  •  The actual results showed a number of particles repelled at almost 180 degrees off of the foil while most passed straight through the foil.
  • I fired a stream of tiny positively charged alpha (helium) particles at a very thin sheet of gold foil. He predicted that the particles would move just a few degrees from their paths as they all passed through.
  • In 1908, Ernest Rutherford, a New Zealand-born English physicist, conducted his gold foil experiment. He discovered the positively,the nucleus, as well as discovered positively charged protons. Rutherford determined that atoms were mostly empty space.
  • I had been puzzled that the particle collisions produced heavier nuclei yet their positive charges remained the same. I have concluded the particles came from the bombarded nuclei and that contained no charge. They're neutral!
  • James Chadwick, a student of Rutherford’s, discovered neutral (“no charge”) neutrons in the nucleus of an atom. His proton-neutron model is still accepted today.
  • My atomic model is called the “planetary model.”
  • In 1913, Niels Bohr, a Danish physicist, said that electrons were located in specific energy levels and that electrons traveled in definite orbits around the nucleus.
  • And that is the development of the atomic model.
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