periodic table

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