chem test

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Anonymous
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163729
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chem test
Updated:
2012-07-24 03:56:37
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chem test
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chem test
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  1. the substance that does the dissolving
    solvent
  2. the substance that is dissolved
    solute
  3. reaction is exothermic when?
    delta H is negative
  4. when is the reaction endothermic?
    when delta H is positive
  5. what type of reaction is favored for solubility?
    exothermic
  6. what is the mixing of delta S and a measure of disorder?
    entropy
  7. when does entropy have less disorder?
    when delta S is negative
  8. when does entropy have more disorder?
    when delta S is positive
  9. what is favored for solutbility in Entropy?
    more disorder (positive delta S)
  10. what makes a solution dissolve?
    the enthalpy must be negative and/or the entropy must be positive.
  11. what happens when the charge of anions/cations changes?
    hydration energy increases
  12. what happens when atomic radius increases?
    hydration energy decreases
  13. what happens to solutbility for exothermic reactions as temperature increases?
    solubility decreases
  14. what happens to solubility for endothermic reactions as temperature increases?
    solubility increases
  15. what depends on the number of particles dissolved in a solution; not the kind of particles
    colligative properties
  16. what happens to vapor pressure as the number of particles increases/
    vapor pressure decreases
  17. what happens to the boiling point as the number of particles increases?
    boiling point increases
  18. what happens to the freezing point as the number of particles increases?
    freezing point decreases
  19. what is the amount of energy required to remove valence electrons?
    ionization energy
  20. what happens to ionization energy as you go down the periodic table?
    it decreases
  21. what happens to ionization energy as you go to the right?
    it increases
  22. what is the amount of energy absorbed when an electron is added?
    electron affinity
  23. what happens when delta E is negative?
    the reaction is exothermic
  24. what happens when delta E is positive?
    the reaction is endothermic

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