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The Atom
Term | Definition |
---|---|
Dalton's Atomic Theory | All matter is made up of indivisible atoms which cannot be created or destroyed. |
William Crooks | Discovered the Electron, Cathode Ray Tube demonstration |
JJ Thompson | Determined that electrons were negative. Found E/M ratio. |
Robert Millikan | Oil drop experiment discovered the size of electron's charge. |
Plum Pudding Model | Solid Positive sphere with electrons embedded. |
Rutherford | Discovered the Nucleus. Fired alpha particles at gold foil. Proton |
Chadwick | Discovered the neutron by firing alpha particles at berylium. |
Energy Level | The fixed energy value that an electron in an atom may have. |
Heisenberg's Uncertainty Principle | States that it is impossible to measure at the same time both the velocity and the position of an electron. |
Orbital | A region of space in which there is a high probability of finding an electron. |