Chapter 5

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Across
  1. 2. CH3COO-1
  2. 5. S-2
  3. 8. positive ion
  4. 9. parts of an atom (2 words)
  5. 13. Ca+2
  6. 18. neutral particle
  7. 19. H+1
  8. 20. MnO4-1
  9. 24. center of an atom
  10. 25. CN-1
  11. 26. number of protons plus number of neutrons (2 words)
  12. 27. SO3-2
Down
  1. 1. positive particle
  2. 3. negative particle
  3. 4. Cs+1
  4. 6. Li+1
  5. 7. Cr2O7-2
  6. 9. Na+1
  7. 10. HCO3-1
  8. 11. NH4+1
  9. 12. a group of electrons surrounding the nucleus (2 words)
  10. 14. atom with a difference in neutrons
  11. 15. hydrogen-1
  12. 16. negative ion
  13. 17. number of protons in an element (2 words)
  14. 20. K+1
  15. 21. mass of of an atom (2 words)
  16. 22. Ag+1
  17. 23. atom with a difference in electrons
  18. 28. Pb+2