Across
- 2. Atomic mass unit
- 4. number of molecules
- 5. Go up and down (columes)
- 6. 3rd ring
- 9. no new substance
- 12. More reactive
- 14. properties of metals and nonmetals
- 17. In nucleus,no charge
- 18. Electricity and heat doesn't pass through
- 19. Found on the left side of the periodic table
Down
- 1. new substance
- 3. 2 Nacl
- 7. can be pulled into wire
- 8. Can be bent or hammered into a sheet
- 10. is the smallest part of an matter
- 11. tell how many atoms
- 13. Electrons cloud,negative
- 15. not shinny
- 16. More stable