Ernest+Rutherford

Ernest Rutherford [] []

Answer: For the Gold Foil Experiment, Rutherford’s set up a lead box containing a radioactive source of fast-moving particles in front of the gold sheet and then surrounded them with a round screen to deflect particles. Rutherford was expecting the positively charged alpha particles to be deflected by the atoms of gold. But he didn't expect that they could possibly bounce off the atoms and not penetrate the gold foil. This is how it looked like:
 * Describe the set-up for Rutherford’s Gold Foil Experiment. Include a visual. What was he doing in the experiment? **



answer: ﻿Showed that atoms contain a small dense, positively charged nucelus and that atoms are mostly empty space
 * Explain the outcome of the Gold Foil Experiment. **

answer:Ernest Rutherford atom model is having a central positive nuclus surrounded by a negative orbiting electrons. His model suggests that most of the mass of the atom is contained in the small nuclues and the rest of the atom is empty space.
 * Summarize his model of the atom. **



answer: Thomson's model was the "plum pudding." Thomas believed was that the electrons and protons are mixed and scattered throughout the atom.
 * Rutherford’s model changed our view of the atom. Compare and contrast his model to Thomson’s model. What new knowledge did we gain? What was wrong with Thomson’s model? Did any of Thomson’s ideas continue to be valid? **



Rutherford's model was figured out at the end of his experiement because he tested out the "gold foil" and he saw the alpha particles deflect back to the radioactive source, at different angles, and straight through the foil. There were no deflections in Thomson's model, so in other words his atom model was not correct. But some of Thomson's ideas continued to be vaid, such as the electrons and protons around in the atom.