Across
- 3. cathode rays negatively charged
- 4. theory of covalent bonding
- 7. oil drop experiment
- 11. cancer treatment and radium
- 13. arranged elements by relative atomic mass
- 15. wave length and atomic number
- 17. discovered the electron
- 18. elements were budling blocks of substances
- 19. no 2 electronbs have same atomic numbers
Down
- 1. the Schrödinger equation
- 2. theory of relativity E=MC^2
- 5. known for the modern periodic table
- 6. bohr model of a atom
- 8. gasses at same temp & press = molecules
- 9. proposed the nuclear structure of atomns
- 10. introduced the atomic theory into chemistry
- 12. quantum theory
- 14. founder of modern chemistry
- 16. proved neutrons existed