History of the Atomic Theory

History of the Atomic Theory

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  • History of the Atomic Theory By Hana and Rosie
  • Rutherford describes the atom as tiny, dense, positively charged core called a nucleus, in which nearly all the mass is concentrated, around which the light, negative constituents, called electrons, circulate at some distance, much like planets revolving around the sun. The Greek Democritus proposed that matter had a limit to how finely it could be 
  • Models represent an Idea, an object, a process or system to to explain things that cannot be experienced directly. Models are important to scientists in both their research and communicating their explanations. John Dalton introduced the atomic theory into chemistry.
  • Atoms have changed over time because chemists have discovered more details about the atom. JJ Thompson discovered the electrons in atoms and he discovered it by conducting Thomas Edison's Ray Experience.
  • Rutherford was the central figure in the study of radioactive and with his concept of the nuclear atom, he led the exploration of nuclear physics . Neil Bohr was a Danish Physicist who made foundational contributions to understanding atomic structure.
  • James Chadwick was an English physicist who was awarded for his discovery of the neutron in 1932
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