INTRODUCTION TO ORGANIC CHEMISTRY EXAM 1 REVIEW

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INTRODUCTION TO  ORGANIC CHEMISTRY EXAM 1 REVIEW Powered By Docstoc
					INTRODUCTION TO ORGANIC CHEMISTRY EXAM 1 REVIEW
This review sheet is for Monday’s review session: 02/23/09 5:05-7:00 HDN 104


   1.) The ____________________________ are nonreactive due to their full valence shells.


   2.) The ____________________________ states that atoms in groups 1-7 react to achieve 8

      valence electrons. Hydrogen is an exception to this rule. It reacts to have ______ valence

      electrons.


   3.) A ________________ bond forms when electron pairs are shared between two atoms.


   4.) Fill in the table below
        Difference in Electronegativity Between                    Type of Bond
                            Atoms


                                                                 Nonpolar covalent



                         0.5-1.9



                                                                        Ionic



   5.) Which one of the bond types from the table involves equal sharing of electrons?

      ____________________________

   6.) Which bond involves unequal sharing of electrons? _____________________________
7.) Identify the bond types pictured below using electronegativity differences.
                Example Bond                                     Bond Type

                   Na --- Cl

                   C --- N

                   C --- H

                   C --- O

                    P --- H


8.) In a polar bond, the atom with the greater electronegativity acquires a partial

   ___________________ charge, while the atom with the lesser electronegativity acquires

   a partial _________________________ charge.

9.) Use the symbols from class to label the partial charges on the polar bond below.




                                    O                        H
10.) Please draw Lewis structures for the following molecules:

a.) H2O2                                                  b.) CBr4




c.) C2H5Cl                                                d.) BF4-
   11.) Predict the shape (VSEPR) of the following:
                   Molecule                                            Shape


                     CF4


                     NF3


                     NO3-


                     SO42-


                     CO2


   * If you need help, use the flow chart posted on the SI web site.


12.) Which of the following pairs are resonance structures? For pairs that are resonance
structures, use curved arrows to derive the second structure from the first.
     13.) Draw resonance structures for the following molecules. Use curved arrows to show
     electron movements.

a.




b.




c.
14.) Are the following molecules polar or non-polar?

                  Molecule                                     Polar/Non-polar




15.) What are the four reasons why functional groups are important?

   _________________________________________________________________________

    __________________________________________________________________________

   _________________________________________________________________________

    _________________________________________________________________________

   _________________________________________________________________________

    _________________________________________________________________________

   _________________________________________________________________________

    _________________________________________________________________________
16.) Identify the functional groups present in the following molecules. Please differentiate
between 1o, 2o, and 3o alcohols and amines.

                                                                           CH3
                                                                HO
                                                                                     CH3
                                                                          HN

                                                                                 CH3
a.)                                                       b.)




                                                                      H2N                     2
                                                                 5                      CH2



                                                                                        N1
             O             O
                                                                           4                      CH3
                                                                               H2C                      3



                                                                                 NH 6
      H3C                        OH                                       H3C
                                                                      7
c.)                                                       d.)




                                                                                OH            O
             CH3


                                                                               CH
      H3C             OH                                                                      CH
                                                                H3C                     C
                CH3                                                                     H2
e.)                                                       f.)




17.) Alkanes are _________________________________, they contain only carbon-carbon

single bonds.
18.) Please name the following alkanes. For more practice go to:
http://www.sciencegeek.net/APchemistry/APtaters/alkanes.htm or
http://www.sciencegeek.net/APchemistry/APtaters/cycloalkanes.htm




  a.)                                       b.)




  c.)                                      d.)




  e.)                                      f.)
19.) Please draw structures for the following alkanes.

a.) 4-isopropyl-3,5-dimethyloctane




b.) 1-tert-butyl-3,4-dimethylcyclohexane




c.) 2,2-dimethylpentane




d.) 1-ethyl-3-methylcyclopentane




e.) 4,4-diethyl-2,3-dimethylheptane

				
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