Across
- 5. the number that is by the element
- 7. each row represents _______
- 9. 6 chemical elements in group 2
- 10. all the things that make up the table
- 13. do not conduct well
- 15. very reactive in water and soft
- 17. we breathe it in
- 18. made up by protons andnuetrons
- 19. the gas elements
Down
- 1. the six nonmetals
- 2. in our food a lot of it too
- 3. negative in an atom
- 4. also in atom and is nice
- 6. like a metal just not the same
- 8. in atoms and is not mean nor nice
- 11. element in the d block on table
- 12. conducts heat and electricity
- 14. also called atomic mass number
- 16. who arranged elements on the table
- 20. has 8 main _______