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Home/ Chem 109H Fall08/ Contents contributed and discussions participated by Justin Shorb

Contents contributed and discussions participated by Justin Shorb

Justin Shorb

Thermo-chemistry - 0 views

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    Does anyone understand why melting ice is endothermic?
Justin Shorb

Macrogalleria: main directory - 0 views

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    From Prof. Moore's e-mail regarding Prof. Mahanthappa's suggested resource.
Justin Shorb

Chemistry 12 Worksheet 1-3 - Reaction Mechanisms - 0 views

  • the html version
    • Justin Shorb
       
      Click on the URL at right to access the pdf file!
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    Google HTML version of a pdf - click on the link on the top to download the pdf file.
Justin Shorb

Atom - Wikipedia, the free encyclopedia - 0 views

  • atom is the smallest unit
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    This applies to Prof. Moore's lecture on the atom
Justin Shorb

Calculating the Number of Photons? - Yahoo! Answers - 0 views

  • 1.0 mW at a wavelength of 670nm
    • Justin Shorb
       
      Exam I reads: 525 nm laser. What color of light is this laser pointer?
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    Basically answers Exam I #6 using different numbers.
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    Number of Photons emitted by a laser pointer.
Justin Shorb

What is the structure of C4H8? - Yahoo! Answers - 0 views

  • 1) 1-butene 2) 2-Butene 3) 2-Butene (cis and trans forms) 4)cyclobutane 5) methyl cyclopropane 6) 2-methyl propene
    • Justin Shorb
       
      Which of these are acceptable answers to Question 5?
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    Discussion about C4H8 isomers. Answers in IUPAC nomenclature.
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    Useful for noting isomers for Exam I #5. See if you can find structures from names.
Justin Shorb

cramster.com | problem solved | q&a board questions - 0 views

  • Response Details:
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    Pictures of isomers for Exam I #5
Justin Shorb

Construct a Lewis Structure - 0 views

  • Starting with a structure indicating only atom connections
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    Useful for extra help in Lewis Diagrams.
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    Doesn't have the same molecules as Exam I #7, but is useful practice!
Justin Shorb

Chemistry: The Molecular Science - Google Book Search - 0 views

  • Chemistry : the molecular science
  • 8.8 Formal Charge
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    Helps to answer Exam I #4
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    Page in Moore et al. text about Unit cells.
Justin Shorb

Window on the Solid State - Unit Cell - 0 views

  • Note that the edges of these cells all connect lattice points in the structure, points with the same environments.
    • Justin Shorb
       
      Be sure that when you draw a unit cell, if you place the 'left' edge against the 'right' edge, they have the same lattice points touching!
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    Helpful for Exam I #3
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    Useful for understanding how Unit Cells work
Justin Shorb

Trends of the Periodic Table - 0 views

  • Atomic Radius
    • Justin Shorb
       
      For a, b (see below for ion size)
  • Electronegativity
    • Justin Shorb
       
      for (c)
  • Ionic Radius vs. Atomic Radius
    • Justin Shorb
       
      For (b)
  • ...1 more annotation...
    • Justin Shorb
       
      Covalency has to do with how polar/non-polar the bond is. The more equal a partnership, the more covalent the bond is. Thus: compare electronegativities. Metal/non-metal pairs form ionic (extreme of polar covalent to the point of being NOT covalent) bonds.
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    Exam I, #1
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    Short exerpts on many basic Periodic Trends
Justin Shorb

Quantum Mechanics: 2-Dimensional Rectangular Box Applet - 0 views

  • java applet
    • Justin Shorb
       
      Try selecting various energy levels at the top of the applet. We have only talked about being in a single energy level at a time - thus deselect an energy level before selecting another one.
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    Only look at this one if you loved problem #9
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    Really in depth look at Energy Levels, Wavefunctions, and superposition of wavefunctions.
Justin Shorb

Periodic Trends - Effective Nuclear Charge - 0 views

  • Slater's Rules
    • Justin Shorb
       
      Note that this is how you would calculate ENC - Although the nucleus gets MORE positive down the PT, the ENC actually decreases! Not just the compensation part, but actually in it's entirety.
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    A good short synopsis of ENC
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    Good for #8 Exam I
Justin Shorb

Prentice Hall Assets - Effective Nuclear Charge Video - 0 views

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    Good for Question #10
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    Video showing basic ENC concepts.
Justin Shorb

Diigo Launches - More Than Just Bookmarking - 0 views

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    Good review for Diigo actually telling you how to use it! Great for people who want to do a project related to this!
Justin Shorb

NSDL.org | Light Color Energy Educational Resources Search Results > Page 1 | The Nati... - 0 views

  • LIGHT: ITS SECRETS REVEALED
    • Justin Shorb
       
      This is a fairly large PDF file, but it has some good visual information!
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    Great PDF talking about light. Good images of how to go from wavelength to sizes of various objects.
Justin Shorb

Olympus Microscopy Resource Center: Physics of Light and Color - Particle and Wave Diff... - 0 views

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    Good Java tutorial about particle versus Waves
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