Across
- 3. determines the charge of the element
- 4. Symbol is K
- 5. Lightest element
- 7. Symbol is Fe
- 8. determines the weight of the element
- 10. Need to breath
- 13. on the stair step line
- 14. Used in nukes
- 15. Symbol is Li
- 16. Is a liquid at room temperature
- 18. determine the charge on element
Down
- 1. Strongest metal
- 2. Symbol is Cl
- 3. link each atom to its neighbor
- 6. Right on the stair step line
- 8. Most common metal on Earths,s crust
- 9. Left of the stairs step line
- 11. Symbol is Ti
- 12. Used in balloons
- 17. Symbol is Ca