atomic theory scientists
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12 Terms
Defined atom as the “smallest bit of matter”
Democritus
said elements consist of “elementary lumpy particles”
John Dalton
First Atomic theory, “bowling ball” model of the atom
John Dalton
Discovered the electron with his cathode ray tube experiment
J.J. Thompson
Came up with the “plum pudding” model of the atom
J.J. Thompson
discovered the nucleus with his gold foil experiment
Ernest Rutherford
said that when you vibrate atoms you get energy in whole intervals called quanta
Max Planck
Discovered Protons
Ernest Rutherford
Found the charge and mass of electrons with his oil drop experiment
Robert A. Millikan
developed the planetary model of the atom
Niels Bohr
Discovered that electrons move around the nucleus
Niels Bohr
Discovered the neutron
James Chadwick
Note 
Flashcards (32)