Wednesday, February 10, 2010

February 9th, 2010

Covalent Molecular Crystals
- The crystals structure of a covalent molecular substance consists of covalently bonded molecules held togethor by intermolecular forces.
- If the molecules are nonpolar, there are only weak London dispersion forces between molecules.
- Covalent moleculer crystals have low melting points, are easliy vaporized, and are good insulators

Amorphous Solids
- Amorphous means "without shape" in Greek
- Unlike atoms that form crystals, the atoms that make up amorphous solids aren't arranged in a regular pattern

Changes of State and Equilibrium
- a phase is any part of a system with uniform compisition and properties.
- Condensation is the process by which a gas changes to a liquid
- a gas in contact with its liquid or solid phase is called a vapor
- Equilibrium is a dynamic condition in which two opposing changes occur at equal rates in a closed system


-Eventually in a closed system, the rate of condensation equals the rate of evaporation and a state of equilibrium is established.

p.s. I am sincerely sorry to post this blog one day late and I hope you forgive me
Posted by at

13 comments:

  1. DuklewskiFebruary 10, 2010 at 5:55 PM

    I forgive you Griff,
    Chemical equilibrium: http://www.chem1.com/acad/webtext/chemeq/

    ReplyDelete
  2. Colby "Girlfraand" MabryFebruary 10, 2010 at 5:58 PM

    http://www.scitopics.com/Amorphous_Pharmaceutical_Solids.html

    good website on amorphous solids.

    ReplyDelete
  3. Will LongFebruary 10, 2010 at 6:15 PM

    This is another site that explains changes of states of matter.

    http://www.visionlearning.com/library/module_viewer.php?mid=120

    ReplyDelete
  4. Glennjamin AdesojiFebruary 10, 2010 at 6:23 PM

    crystalline and amorphous solids

    http://www.seas.upenn.edu/~chem101/sschem/solidstatechem.html

    ReplyDelete
  5. Matt FarrellFebruary 10, 2010 at 6:37 PM

    a good website on amorphous solids:
    http://www.ndted.org/EducationResources/CommunityCollege/Materials/Structure/solidstate.htm

    ReplyDelete
  6. Evan HarknettFebruary 10, 2010 at 7:04 PM

    site on amorphous solids
    http://en.wikipedia.org/wiki/Amorphous_solid

    ReplyDelete
  7. Will BrantleyFebruary 10, 2010 at 7:04 PM

    here is a site about state changes:
    http://id.mind.net/~zona/mstm/physics/mechanics/energy/heatAndTemperature/changesOfPhase/changeOfState.html

    ReplyDelete
  8. Patrick SweeneyFebruary 10, 2010 at 7:34 PM

    Website on amorphous solids.

    http://en.allexperts.com/e/a/am/amorphous_solid.htm

    ReplyDelete
  9. (The) David RayFebruary 10, 2010 at 8:19 PM

    crystal types

    http://www.chemistry.co.nz/crystal_types.htm

    ReplyDelete
  10. Peter WetzelFebruary 10, 2010 at 10:34 PM

    Good site on Amorphous solids:

    math.ucr.edu/home/baez/physics/General/Glass/glass.html

    ReplyDelete
  11. Charlie FisherFebruary 11, 2010 at 5:36 AM

    site on equilibrium
    http://www.chem1.com/acad/webtext/chemeq/Eq-01.html

    ReplyDelete
  12. Justin ScheunerFebruary 11, 2010 at 5:53 AM

    here is a site about amorphous solids
    www.physorg.com/tags/amorphous+solid/

    ReplyDelete
  13. Donnie SheaFebruary 11, 2010 at 5:54 AM

    Site on amorphous solids:
    http://www.newworldencyclopedia.org/entry/Amorphous_solid

    ReplyDelete

Subscribe to: Post Comments (Atom)