Across
- 3. Subatomic particle with neutral charge
- 6. a mathmatical expression to find wave functio
- 10. means atom in greek
- 11. atom or molecule that gained or lost electron
- 12. Who descredited Leucippus and democritus
- 14. Subatomic particle with negative charge
- 16. experiment to find charge and mass of electron
- 17. the sum of protons and neutrons on perodic table
Down
- 1. who discovered the electron
- 2. the scientist who in invented the "Billiard Ball Mode"
- 4. electrons at the out edge of the shell
- 5. a chemical bond of two elements
- 7. rejected the idea of only four elements
- 8. chemist that discovered orbital model
- 9. same element,different mass
- 13. subatomic particle with positive charge
- 15. substance that cannot be broken down into a smaller substance