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Keystone Chemisty Midterm (Jones)
Question | Answer |
---|---|
Aristotle | 4 element theory, Earth, Air, Fire, Water |
Democritus | said the universe is comprised of small particles that cannot be divided any more |
John Dalton | All matter is made of atoms, Atoms of the same element are identical, Atoms of different atoms are not identical, Atoms cannot be created or destroyed |
J.J. Thomson | Used the cathode ray tube to find electrons |
Robert Millikan | Plum-Pudding Model |
Becquerel | discovered radioactivity in Uranium |
Curie | discovered Polonium |
Earnest Rutherford | Shot alpha particles @ a pice of gold foil, discovered the nucleus, and protons of an atom |
James Chadwick | Used cloud chamber to determine the mass of an atom |
Bohr | LInked the atom's electrons w/ photon emissions |
DeBroglie | electrons have a wave particle duality, like light |
Heisenberg | "Uncertainty Priciple" (cant find position and velocity of an electron @ the same time) |
Schroedinger | created electron Wave Equation |