Chem 122 Ch 13

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studysuccess
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301536
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Chem 122 Ch 13
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2015-04-26 01:13:58
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Chem 122 13
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Chem 122 Ch 13
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Chem 122 Ch 13
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  1. Material that exists in regular, repeating, three-dimensional, geometric patterns
    Crystaline
  2. Solid that do not have any regular, internal geometric pattern.
    Amorphous.
  3. Material that possesses two or more crystalline forms is
    polymorphic
  4. A substance existing in two or more molecular or crystalline forms (e.g. graphite and diamond and allotropic forms of carbon).
    Allotropes.
  5. The transition between solid and liquid is the ___ ___
    melting  point
  6. The equilibrium relationship between the gas, liquid and solid is represented by a
    phase diagram
  7. Liquid, gas, and solid coexist at the ___
    tripple point
  8. There is a ____ temperature above which there cannot be a separate liquid and gas phase.
    critical Point
  9. The energy required to change 1 gram of a solid into a liquid at its melting point is called
    heat of fussion
  10. The amount of heat required to change 1 gram of a liquid to a vapor at its normal boiling point is called
    heat of vaporization
  11. Condensation and crystalization ___ heat
    release
  12. Vaporization and melting___ heat
    absorbe
  13. The quantity of heat required to change the temperature of 1 g of any substance by 1 degree C
    Specific heat capacity
  14. The desolving agent or the most abundant component in a solution.  

    Process of breaking down a solid's structure through action of a liquid is called ___
    solvant/solvation.
  15. Salts dissolve in water when the ____ ___ betwee ions are reduced by ____ and ____ effects of the water molecules.
    Electrostatic force, isolation and ion stabilization
  16. The water molecule is ____; therefore it may stabilize both ___ and __
    polar, cations and anions.
  17. The statement ____ ____ ____ indicates that molecules which are non-polar are not readily solvated by ____ solvents.
    "Like desolves like,"  Polar
  18. What ions desolved in water make it hard?
    Mg2, Ca2, Fe2
  19. When hard water ions are removed with soap or effectively chelated, the water then becomes
    softened.
  20. Name 2 methods for softening water?
    • 1) adding chenical softeners
    • 2) adding ion exchange resin.
  21. What is the heat of fusion for water
    80 cal/g
  22. A solution is defined as
    A system in which one or more substances is homogeneously mixed or dissolved in another substance is called
  23. What effect does Na2CO3 have on hard water
    it softens it.
  24. Heat of vaporization for water
    540 cal/g
  25. identify Liquid, gas, solid, normal melting point, & normal boiling point:
    • -Gas bottom, liquid middle, solid left. --Normal melting point 760 torr far left temp line.
    • -normal boiling point 760 torr far right temp.

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