Ch 122 CH 14

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studysuccess
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Ch 122 CH 14
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2015-05-06 00:21:50
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Ch 122 CH 14
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Ch 122 CH 14
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  1. Definition: a substance whose aqueous solution conducts electricity.

    -Compounds which dissolve to form solutions which conduct electricity are called___
    electrolytes
  2. A primary conductor includes ____, since current flow is the movement of conductors
    metals
  3. Secondary conductors include solutions of ____, because current is transported by the movement of ___
    ions, ions
  4. Definition: The process whereby electrical energy is used to bring about chemical change.

    -Current passing through solutions causes chemical reactions- this is called___
    electrolysis
  5. Definition: The electrode where eduction occurs in an electrochemical reaction.

    -The electrode bearing an excess of electrons is called the ___
    Cathode.
  6. Definition: The electrode where oxidation occurs in an electrochemical reaction.
    anode
  7. Why are electrolytes such as acetic acid weak conductors of electricity?
    Because they're only partly ionized.
  8. Colligative properties are dependent on the ___ of solute particles.
    Number
  9. The vapor pressure of solution is (lower/higher) than pure solvent?
    Lower
  10. Solutions freeze at ___ temperatures and boil at ___ temperatures than pure solvents.
    lower, higher
  11. The constant which relates the change in temp to concentration is called ___ ____ or ____ ____
    molal boiling, or freezing constant
  12. Concentrations are expressed in ____
    molal
  13. molal AKA molality is measured by ?/?
    Moles of solute per kg solvent.
  14. _____ is the movement of solvent molecules from high to low concentrations
    osmosis
  15. Osmotic pressure is a measurement of
    the movement of molecules tendency to go from high to low concentrations.
  16. Sea water relative to normal cells is _____
    (hypertonic, hypotonic, or isotonic)

    Water leaves the cell, and it shrinks.
    hypertonic.
  17. Freshwater is ____ (hypertonic, hypotonic, or isotonic)

    -Cell swells
    Hypotonic.
  18. concentration of elements are the same within a cell as outside the cell is considered_____ (hypertonic, hypotonic, or isotonic)
    isotonic
  19. a Volatile solution is one which has
    a substance that readily evaporates: higher BP, lower FP

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