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Democritus proposed the first idea of the atom; "by convention bitter, by convention sweet, but in reality atoms and void."
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Discovery of the role oxygen plays in combustion. He recognized and named oxygen and hydrogen
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Proposed an atomic theory with spherical solid atoms based upon measurable properties of mass.
- All matter is made up of atoms
- Atoms of the same element are the same -
Discovery of the electron
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Won the Nobel Prize for physics for his work on the photoelectric effect and measuring the charge of the electron.
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The discovery and creation of the atominc atom, helped aid what we know about atoms and how they function
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Discovered the neutron
