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Who defined the atom as the “smallest bit of matter”
Democritus
What does atom literally mean
Indivisible
Who dismissed Democritus idea as worthless 100 years later
Aristotle
Who stated that matter consisted of elementary lumpy particles?
John Dalton
Who created the Billiard ball model
John Dalton
Who discovered the electron with his cathode ray tube experiment
J.J Thompson
Who came up with the plum pudding model of the atom?
J.J Thompson
Who stated that “When you vibrate atoms enough you only get energy in whole intervals: energy packets “quanta”
Max Planck
Who discovered the nucleus with the gold foil experiment
Ernest Rutherford
Who stated that an empty slate makes up atoms
Ernest Rutherford
What is the small dense positively charged center of a atom called
Nucleus
Who identified protons
Ernest Rutherford
Who found charge and mass of electrons with his oil drop experiment
Robert A. Millikan
Who developed the Planetary model of an Atom
Niels Bohr
Who found out that Electrons move around the nucleus at set distances
Niels Bohr
What was the name for electrons that move around the nucleus at set distances named.
“Electron Orbitals”
Who discovered the Neutron
James Chadwick