Chem V21 - Organic and Biochemistry » Fall 2021 » Introduction to Organic Compunds PreLab Assignment
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Question #1
Which of the following is NOT typical of most organic compounds?
A.
high flammability
B.
poor solubility in water
C.
covalent bonding
D.
high melting point
E.
low boiling point
Question #2
In a molecule with a symmetrical arrangement of polar bonds, the overall molecule is
A.
strongly reverse polar.
B.
somewhat polar.
C.
highly polar.
D.
reverse polar.
E.
nonpolar.
Question #3
Generally, a solution of an organic compound in water will be electrically
A.
charged.
B.
insulated.
C.
highly ionized.
D.
highly conductive.
E.
nonconductive.
Question #4
VSEPR theory predicts that simple carbon compounds will form bonds that are
A.
as far apart as possible.
B.
pointed to the corners of a triangle.
C.
arranged in a straight line.
D.
pointed to the corners of a cube.
E.
as close together as possible.
Question #5
The bond angles of tetravalent carbon are all approximately
A.
60°.
B.
109°.
C.
45°.
D.
90°.
E.
102°.
Question #6
As carbon bonds with atoms of increasingly higher electronegativities, the polarity of the bond
A.
stays the same.
B.
reverses.
C.
decreases.
D.
becomes inverted.
E.
increases.
Question #7
Carbon tetrachloride has a polar C-Cl bond. What is the overall polarity of the carbon tetrachloride molecule? Assume Carbon is 2.5 and Chlorine 3.0 Pure covalent = 0-0.4 Polar covalent = 0.5 - 1.9 Ionic = > 2.0
A.
inverse polarity
B.
nonpolar
C.
strongly polar
D.
reversed polarity
E.
weakly polar
Question #8
Which one of the following is NOT an organic substance?
A.
nylon
B.
an antibiotic
C.
silk
D.
coal
E.
salt, sodium chloride
Question #9
A hydrocarbon contains only the elements
A.
carbon and hydrogen.
B.
carbon and oxygen.
C.
carbon, hydrogen, and oxygen.
D.
hydrogen and oxygen.
E.
carbon, hydrogen, and nitrogen.
Question #10
The organic compounds are important for use in
A.
health and medicine
B.
material science (polymers), health, medicine, and many other ways to improve our quality of life
C.
medicine and many other ways to improve our quality of life
D.
material science (polymers)
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