Across
- 2. symbol is Cl
- 7. symbol is I
- 9. known also as calcium carbonate
- 12. known also as iron oxide
- 14. known also as silicon dioxide
- 15. symbol is Na
- 17. first column on the periodic table
- 18. gases in group 18
- 19. most of the periodic table is made up of this
- 20. symbol is C
Down
- 1. if an element is not metal or nonmetal
- 3. symbol is F
- 4. symbol is B
- 5. group 17
- 6. symbol is Zn
- 8. alkaline blank metals the second column
- 10. this element and helium are in period 1
- 11. symbol is Li
- 13. this is what each block has on the table
- 16. known also as sodium hypochlorite
- 18. symbol is Ne