Chemistry

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Across
  1. 3. H2O
  2. 5. 9th element of the periodic table
  3. 8. Be
  4. 10. second element of the periodic table
  5. 11. S
  6. 14. Na
  7. 15. Smallest thing that can exist
  8. 16. 6th element of the periodic table
  9. 17. Ne
  10. 18. NaCl
  11. 21. Ni
  12. 23. the gas we breathe with
Down
  1. 1. first element of the periodic table
  2. 2. what goes first metals or non-metals
  3. 4. third element of the periodic table
  4. 6. 20th element of the periodic table
  5. 7. Who invented the periodic table
  6. 9. P
  7. 12. Si
  8. 13. fifth element of the periodic table
  9. 19. When 2 or more element mixed together but not chemically bonded
  10. 20. Ar
  11. 22. when the particles bond together