exam_1_F_2011

exam_1_F_2011 - CHM 257 Name_ Lab TA_ Lab Period (Day &...

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CHM 257 Name__________________________ Lab TA_________________________ Lab Period (Day & Time)___________ This exam contains 13 problems on 6 pages (numbered 1 6) in addition to the cover and scoring pages (i and ii). There is a periodic table and a blank worksheet attached at the end. Please write your name at the top of every page.
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Page 1 Name__________________________ 1. (4 pts.) Give the electron configuration for boron and sodium. B 5 11 Na 11 23 2. (4 pts.) Draw the Lewis structure for the two following atoms and include all valence electrons. magnesium chlorine 3. (10 pts.) Determine whether each of the following statements best describes an ionic bond or a covalent bond (write ionic or covalent in the blank). c.) All of the bonds in 2-methylhexane are: a.) This type of bond holds together atoms when electrons are shared: b.) Atoms will gain or lose electrons in this type of bond: d.) This type of bonding is between anions and cations: e.) The double bond in ( Z )-2-pentene is:
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Page 2 Name__________________________ 5. (6 pts.) Circle the three polar molecules below.
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exam_1_F_2011 - CHM 257 Name_ Lab TA_ Lab Period (Day &...

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