Across
- 4. method- numerical value
- 7. 18
- 8. -Negative
- 9. chemical substance
- 12. ion
- 14. number- Decimal
- 16. ions- bonded atoms
- 18. Small sized number
- 19. -atoms
- 20. metals- Blue
- 21. compounds- ions together
- 22. 7
- 23. Mono, di, tri
Down
- 1. H20
- 2. Element
- 3. gases- light blue
- 5. Negative,Positive,Neutral
- 6. compounds- C02(Carbon dioxide)
- 10. -Neutral
- 11. number - periodic number
- 13. Na
- 15. ion
- 17. - Positive