Download Chemistry Homework * History of the Atom

1
Chemistry Homework – History of the Atom
Name
1. What part of the atomic model did J.J. Thomson contribute to?
a. Electron
b. Neutron
c. Atom
d. Proton
2. In Thomson’s experiment what happened to the cathode ray when the magnetic field was
applied? Give a short explanation for why this occurred.
3. Rutherford discovered that the atom is mostly empty ______________ and that there is a small,
positively charged ___________
4. Explain how the Gold Foil experiment showed Thomson’s Plum Pudding model was incorrect.
5. Draw a picture of Bohr’s atomic model, and explain why it was not correct.