chem test 2

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Author:
lacythecoolest
ID:
140248
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chem test 2
Updated:
2012-05-15 01:21:24
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chem test
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chem exam 2
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  1. if the compound is a metal cation combined with a non-metal anion
    or either combination with a polyatomic ion
    ionic compound
  2. if a compound is a combination of non-metals
    molecular compound
  3. ammonium
    NH4+
  4. hydroxide
    OH-
  5. acetate
    CH3CO2-
  6. carbonate
    CO3 (2-)
  7. nitrate
    NO3-
  8. phosphate
    PO4(3-)
  9. sulfate
    SO4(2-)
  10. What is SO2?
    molecular
  11. What is CaCl2?
    ionic
  12. What is (NH4)2SO4?
    polyatomic ion
  13. the energy required to break an ion apart; always positive (endothermic)
    lattice Enthalpy/Energy
  14. the enrgy released when a substance is dissolved into a solution; always negative (exothermic)
    Hydration Enthalpy/Energy
  15. rxn in which the solution becomes warmer because the process gives off energy
    exothermic
  16. rxn in which the solution becomes cooler because the process is taking in energy
    endothermic
  17. the natural tendency of things to become mixed
    Entropy
  18. when rxn's are more disordered
    endothermic
  19. when rxns have less disorder
    exothermic
  20. As the temperature of gas solutes decreases, the solubility of them in solvents
    increases
  21. list the four colligative Properties
    • 1. Freezing Point Depression
    • 2. Boiling Point Elevation
    • 3. Vapor-pressure Reduction
    • 4. Osmotic Pressure
  22. Colligative Properties depend on the:
    quantity or concentration of the solute particles
  23. Colligative properties does not depend on:
    the kind or identity of the solute particles
  24. What influences reaction rate?
    • Concentration
    • Temperature
    • Surface area
    • Agitation
    • Catalysts
  25. the 3 Arrhenius factors
    • 1. The fraction of molecules possessing an energy of Ea or greater
    • 2. The number of collisions occurring per second
    • 3. THe fraction of collisions that have the proper orientation
  26. hydrogen carbonate/bicarbonate
    HCO3(-)
  27. Where is the + on NH4?
    on the N
  28. Acetate
  29. Nitrate
  30. Sulfate
  31. Phosphate
  32. acetate
  33. ammonium

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