Across
- 3. group 2 called
- 7. periodic........
- 8. group 18 name
- 10. the first period at the bottom of the periodic table
- 11. what do we breath
- 12. what symbol is Fe
- 14. what is the number on the top of the name
- 18. vertical columns called
- 19. horizontal rows called
- 20. what has atomic mass of 1.008
Down
- 1. the second period at the bottom is called
- 2. group 17 name
- 4. group 2 electrons
- 5. change from metallic to nonmetallic propertes
- 6. element symbol with Si
- 9. group 13 name
- 13. group 1 called
- 15. what symbol is Mo
- 16. another name for halogen elements
- 17. what symbol is Ti