Chem Vocab Review

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Across
  1. 2. same # protons, different # of neutrons
  2. 3. shows formulas and relative amounts
  3. 6. substance changes into new substance
  4. 7. ability of a substance to be dissolved
  5. 11. substance formed during a chemical reaction
  6. 13. mass in grams of one mole of pure subst.
  7. 16. positively charged dense center of the atom
  8. 17. more than one valid Lewis structure exists
  9. 19. smallest particle of an element
  10. 20. has mass and takes up space
  11. 21. two different elements chemically combined
  12. 23. mass weighted avg mass of the isotopes
  13. 24. temp to go from solid to liquid
  14. 26. substance dissolved in a solution
  15. 28. negative particle in an atom
  16. 30. bond, electrons are not shared equally
  17. 31. ion with a positive charge
  18. 32. positive particle in an atom
  19. 33. unequal # of protons and electrons
Down
  1. 1. separate a mixture using boiling points
  2. 4. type of bond, electrons are transferred
  3. 5. vertical column
  4. 8. lose/gain/share electrons to become stable
  5. 9. type of bond, atoms share electrons
  6. 10. physically combined, retains parts' properties
  7. 11. horizontal row
  8. 12. temp to go from liquid to gas
  9. 14. neutral particle in an atom
  10. 15. electrons that determine chemical properties
  11. 18. ion with a negative charge
  12. 22. amount of mass per unit of volume
  13. 23. the number of protons in an atom
  14. 25. two or more atoms covalently bonded
  15. 27. properties of both metals and nonmetals
  16. 29. the starting substance in a chemical reaction