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Atomic Theory
Created by
Jamison
⟶ Updated 7 months ago ⟶
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Events
Niels Bohr finds that electrons travel in separate orbit bits around the nucleus
Henry Mosley used experiments to determine the atomic number of an element
De Brogile suggests that all matter has wave properties
Robert Millikan performs the oil drop experiment which discovers the charge of the electrons as negative
Proust discovers that a pure substance will always contain the same elements
John Dalton proposes the first atomic theory 1. All matter is made up of tiny invisible particles 2. Atoms of the same element are the same 3. Atoms of different elements are different 4. Atoms combine to form coumpunds
JJ Thompson discovers the electron and the first subtomic particle
Ernest Rutherford finds that the atom is mostly empty with a very tiny positive nucleus core
James Chadwick discovers the neutron
