who discovered what Flashcards
(6 cards)
1
Q
who first suggested existence of atoms
A
Democritus
2
Q
who discovered electrons
A
J.J. Thompson, using Cathode Ray Tube
3
Q
who discovered charge of an electron
A
Robert A. Millikan, using oil drop experiment
4
Q
who found evidence for a positively charged particle
A
E. Goldstein, used cathode ray tube
5
Q
who confirmed existence of neutron
A
James Chadwick
6
Q
who showed atom was mostly empty space with a little positive charge condensed in the middle
A
Rutherford, using gold foil experiment
