Chemistry Crossword

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Across
  1. 2. organizes all 118 elements
  2. 5. tells you the number of protons in an atom
  3. 7. element with a symbol of Au
  4. 8. element with a symbol of Sb
  5. 12. element with a symbol of K
  6. 13. element with a symbol of Na
  7. 14. all matter is made of these
  8. 15. element with a symbol of Cu
  9. 18. negatively charged particle
  10. 19. positively charged particle
  11. 20. charge of a neutron
  12. 22. the name of the electrons on the outside energy level
  13. 24. the name of the vertical columns on the periodic table
  14. 25. the number of valence electrons that hydrogen and lithium have
  15. 26. element with a symbol of Ag
  16. 27. the home of the protons and neutrons
  17. 28. element with a symbol of Pb
Down
  1. 1. element with a symbol of Hg
  2. 2. charge of a proton
  3. 3. group 17, period 4
  4. 4. element with a symbol of Sn
  5. 6. group 2, period 3
  6. 9. neutral particle
  7. 10. element with a symbol of Fe
  8. 11. element with more protons than carbon and less electrons than oxygen
  9. 16. the name of the horizontal rows on the periodic table
  10. 17. charge of a electron
  11. 18. the period an element is in tells us how many ____ it has
  12. 21. where the electrons live
  13. 23. the combined number of protons and neutrons