Tyler Proulx

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Across
  1. 3. chemical rule that reflects observation
  2. 6. way of presenting information about chemical proportions of atoms
  3. 10. Co
  4. 11. NaF
  5. 12. CaS
  6. 13. substance that is not conductive
  7. 17. Hg0(s)-->Hg(1)+Oz(g)
  8. 18. H20 forms only between atoms of nonmetals
  9. 19. positively charged ion
  10. 20. 14 electrons
  11. 22. A12S3
  12. 23. single element reacts with a compound
  13. 24. substance that takes part in and undergoes change during a reaction
  14. 25. S50
  15. 28. A+B-->AB
  16. 29. group of atoms bonded together
  17. 30. total energy of an isolated system remains constant
  18. 31. 4 electrons
Down
  1. 1. formed by chemical reactions species
  2. 2. forces that hold atoms together
  3. 4. AB+CD-->CB+AD
  4. 5. contains 7 valence electrons
  5. 7. 42
  6. 8. 51
  7. 9. representation of a chemical reaction in the form of symbols
  8. 14. NaC1
  9. 15. negatively charged ion
  10. 16. (2H2(g)+0z(g)-->(02(g)+H20(1)
  11. 21. temperature of which a given solid will melt
  12. 26. 1s^2 2s^2 2p^3
  13. 27. substance that conducts electricity when dissolved in water
  14. 32. an atom or molecule with an electric charge