Across
- 2. stopped by aluminum foil
- 3. stopped by paper
- 5. bond between 2 non metals
- 6. pass through human body
- 8. simillar chemical properties
- 10. at least 2 elements chemically combined
- 11. based on valence electrons
- 13. in the nucleus
- 15. nobel gases
- 16. ex: salad
- 17. in other words atomic number
- 19. same element with the same number of protons but different neutrons
- 20. number of energy levels
Down
- 1. measured in grams
- 2. also called planetary model
- 4. negative charge
- 7. bond between a mental and non metal
- 9. closeness of the data
- 12. a charged element
- 14. electronegativity, ioniazation, atomic radius, and sheilding are all examples of
- 18. ex: Pure Water