Atomic Theories and Models

2. Greek for indivisible
4. The high-vacuum ____-ray was used to discover the electron
8. What Dalton thought an atom was like
9. Discovered the electron
10. The Quantum Mechanical Model _____ the electrons location
12. Claimed there were only four elements
13. Preformed the gold foil experiment
15. Discovered the neutron
16. _____ of rays by electronically charged plates was evidence for "bodies much smaller than atoms".
18. Preformed the oil drop experiment
19. Daltons Atomic Theory says that all ____ of a given element are identical in mass and volume
21. Who expanded upon the Bohr model?

1. Rutherford says the nucleus is 10,000 times _____ than the atom.
3. Is another name for Rutherford's model
5. Aristotle rejected his idea resulting in the slow of atomic theory for 2,000 years.
6. The oil drop experiment discovered the charge and mass of the ___.
7. Heisenberg's ____ Principle
11. A chemical _____ is a rearrangement of atoms
14. Is the "body much smaller than an atom".
17. Aristotle's 4 elements were wrong because it was impossible to ____ any of them.
20. Who came up with the revolutionary idea that electrons lined up in a regular pattern