Across
- 4. number of protons in nucleus
- 5. discovered charge and mass of electron
- 7. used gold foil experiment
- 10. model which supports electrons are in orbit in energy levels
- 11. model used to discover protons and idea of nucleus
- 12. Millikan's famous experiment
- 16. most of atom's volume
- 19. ray tube equipment JJ Thompson used
- 20. Who claimed the term atomos?
- 21. expanded the Bohr model of atom
- 22. model that represents atoms are the smallest type of matter and all solid.
- 23. principle which states it's impossible to know the exact position of a particle
Down
- 1. Who rejected the idea there were only 4 elements?
- 2. likelihood of finding an electron in certain position
- 3. charge of neutrons
- 6. Who said the 4 elements were earth, air, fire, and water?
- 8. average mass of an atom
- 9. something besides just the proton
- 13. charge of protons
- 14. discovered the neutron
- 15. charge of electrons
- 17. Thomson's model of atom
- 18. model that proved all protons are located in nucleus