Across
- 7. element number 17
- 8. the things on the periodic table
- 10. particle with a negative charge
- 13. far apart particles
- 16. element number 93
- 17. the number at the bottom of an element square on a period table is the _______ mass
- 18. groups 3-12 are ______ metals
- 20. element with differing masses
Down
- 1. group 1 contains ______ metals
- 2. bond of two nonmetals
- 3. period 4, group 2
- 4. electrons on the outer shell
- 5. packed particles
- 6. particle with a positive charge
- 9. group 17
- 11. fixed volume but not fixed shape
- 12. when writing an equation, you use ______ numbers to ensure your compounds are balanced
- 14. bond of a metal and a nonmetal
- 15. particle with a neutral charge
- 19. group 18 are _______ gases