Across
- 3. energy is mass
- 4. naming the element oxygen
- 6. discovery of polonium and radium
- 8. described atoms in many ways
- 10. discovered the neutron
- 11. discovered the atom
Down
- 1. oil drop experiment
- 2. discovered the electron
- 3. 1st periodic table showed that elements with similar properties
- 4. discovered the neutron
- 5. discovered the quantum physics/theory
- 7. (principle)determine the position of a particle or the momentum
- 8. atom contained an original positive charge within their nucleus
- 9. got it all started