Across
- 2. another name for a hydrogen atom
- 3. atoms that lose or gain electrons
- 6. light and strong metal used in aircraft manufacturing
- 9. neither metals nor non-metals
- 12. a chemical ______ is a written chemical reaction
- 13. the number of electron shells of an atom
- 14. most metals have a high _______ point
- 20. hold ions together to form compounds
- 21. the electrons on the outer shell
- 22. an insoluble ionic compound
Down
- 1. compounds formed between metals and non-metals
- 4. the main gas in Earth's atmosphere
- 5. Can not be created nor destroyed during a chemical reaction
- 6. ____metals. The first group of the periodic table
- 7. metals are good conductors of
- 8. non-metals are mainly solids except this
- 10. sharing 4 electrons between atoms
- 11. most abundant element in the universe
- 15. ____ represent the number of valence electrons in the periodic table
- 16. the group of unreactive gases
- 17. the rule that requires 8 electrons on the outer shell
- 18. two or more atoms bonded together
- 19. bonds that share electrons