Name: 
 

Topic 10/20 O-Chem


Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 
How many double covalent bonds are in an alkane?
a.
0
c.
2
b.
1
d.
3
 

 2. 
What is the simplest straight-chain alkane?
a.
graphite
c.
methane
b.
ammonia
d.
ethane
 

 3. 
The names of the straight-chain alkanes all end with the suffix ____.
a.
-ene
c.
-ane
b.
-ine
d.
-ino
 

 4. 
The condensed structural formula for 2,2,3-trimethylbutane is ____.
a.
CHmc004-1.jpgCHmc004-2.jpg(CHmc004-3.jpg)CH(CHmc004-4.jpg)mc004-5.jpg
c.
CHmc004-11.jpgC(CHmc004-12.jpg)mc004-13.jpgCH(CHmc004-14.jpg)mc004-15.jpg
b.
CHmc004-6.jpgC(CHmc004-7.jpg)mc004-8.jpgC(CHmc004-9.jpg)mc004-10.jpg
d.
CHmc004-16.jpgCHmc004-17.jpgCH(CHmc004-18.jpg)C(CHmc004-19.jpg)mc004-20.jpg
 

 5. 
Why are the molecules of hydrocarbons nonpolar?
a.
The intermolecular attractions are strong.
b.
All the bonds are single covalent bonds.
c.
The electron pair is shared almost equally in all the bonds.
d.
Van der Waals forces overcome polarity.
 

 6. 
The general name for hydrocarbons with at least one triple covalent bond is ____.
a.
alkenes
c.
alkanes
b.
alkyls
d.
alkynes
 

 7. 
Which of the following is true about structural isomers?
a.
Structural isomers have the same molecular formula.
b.
Structural isomers have different physical and chemical properties.
c.
Structural isomers have the same elemental composition.
d.
all of the above
 

 8. 
In the cis configuration, the methyl groups are placed ____.
a.
in between the double bonds
c.
to the left of the double bond
b.
on opposite sides of the double bond
d.
on the same side of the double bond
 

 9. 
Hydrocarbons containing a saturated carbon ring are called ____.
a.
cyclic hydrocarbons
c.
aliphatic hydrocarbons
b.
aromatic hydrocarbons
d.
alkylated hydrocarbons
 

 10. 
What is the first step in the refining of petroleum?
a.
cracking
c.
cooling
b.
drilling
d.
distillation
 

 11. 
Which of the following is NOT a product obtained from the distillation of coal tar?
a.
benzene
c.
coke
b.
phenol
d.
toluene
 

 12. 
The most important way to classify organic compounds is by ____.
a.
the number of carbon atoms in the longest chain
b.
functional group
c.
the type of carbon—carbon bonds
d.
reactivity
 

 13. 
Which halocarbon has the highest boiling point?
a.
1-chloropropane
c.
1,2,3-trichloropropane
b.
2-chloropropane
d.
2-dichloropropane
 

 14. 
Which of the following compounds is trichloromethane?
a.

mc014-1.jpg
c.

mc014-3.jpg
b.

mc014-2.jpg
d.

mc014-4.jpg
 

 15. 
An example of a secondary alcohol is shown by the structure ____.
a.

CHmc015-1.jpgCHmc015-2.jpgOH
c.

CHmc015-4.jpgCHmc015-5.jpgCHmc015-6.jpgOH
b.

mc015-3.jpg
d.

mc015-7.jpg
 

 16. 
Phenols are characterized by ____.
a.
their behavior as gases
c.
an OH group on a benzene ring
b.
ether linkages
d.
their use as flavoring agents
 

 17. 
What is the common name of the following alcohol?
mc017-1.jpg
a.
sec-hexyl alcohol
c.
isohexyl alcohol
b.
tert-hexyl alcohol
d.
hexyl alcohol
 

 18. 
Which of the following alcohols is used in antifreeze?
a.
ethanol
c.
ethylene glycol
b.
isopropyl alcohol
d.
glycerol
 

 19. 
In an addition reaction, which bond of the reactant is broken?
a.
carbon—carbon single bond
c.
carbon—carbon double bond
b.
carbon—hydrogen single bond
d.
carbon—hydrogen double bond
 

 20. 
The functional group in CHmc020-1.jpgOCHmc020-2.jpgCHmc020-3.jpgCHmc020-4.jpgCHmc020-5.jpg is a(n) ____.
a.
ester
c.
carbonyl
b.
ether
d.
carboxyl
 

 21. 
Name the compound CHmc021-1.jpgCHmc021-2.jpgO CHmc021-3.jpgCHmc021-4.jpgCHmc021-5.jpg.
a.
diethyl ether
c.
ethylpropyl ether
b.
dipropyl ether
d.
pentane oxide
 

 22. 
What type of compound is the following?
mc022-1.jpg
a.
alcohol
c.
ether
b.
aldehyde
d.
ketone
 

 23. 
Which carbon skeleton represents an aldehyde?
a.

mc023-1.jpg
c.

mc023-3.jpg
b.

mc023-2.jpg
d.

none of the above
 

 24. 
Aldehydes have the general structure ____________.
a.

mc024-1.jpg
c.

mc024-3.jpg
b.

mc024-2.jpg
d.

mc024-4.jpg
 

 25. 
Which of the following compounds has the highest boiling point?
a.
2-pentanone
c.
pentene
b.
pentane
d.
chloropentane
 

 26. 
Which of the following compounds is known as acetic acid?
a.

mc026-1.jpg
c.

mc026-4.jpg
b.

CHmc026-2.jpg—CHmc026-3.jpgOH
d.

mc026-5.jpg
 

 27. 
The IUPAC name for a carboxylic acid with two carbons in a straight chain would be ____.
a.
ethanalic acid
c.
methacarboxylic acid
b.
dimethylmethanoic acid
d.
ethanoic acid
 

 28. 
Esters contribute which property to fruits?
a.
odor
c.
texture
b.
color
d.
skin thickness
 

 29. 
If a primary alcohol is oxidized, the type of molecule it becomes is called a(n) ____.
a.
carboxylic acid
c.
alcohol
b.
ketone
d.
aldehyde
 

 30. 
Which of the following compounds will produce the least energy when completely oxidized?
a.
hexanoic acid
c.
hexane
b.
hexanol
d.
hexanal
 

 31. 
The monomer used as the building block in polyethylene is ____.
a.
ethane
c.
monoethane
b.
ethene
d.
amino acid
 

 32. 
What happens in a condensation reaction?
a.
head-to-tail joining of monomers
b.
side-by-side joining of monomers
c.
cross-linking of monomers
d.
substitution of a halogen on monomers
 

 33. 
The simple sugars are also called ____.
a.
alcohols
c.
cycloalkanes
b.
carboxylic acids
d.
monosaccharides
 

 34. 
Which form of polysaccharide is found in animals?
a.
starch
c.
sucrose
b.
glycogen
d.
glucose
 

 35. 
The repeating unit of cellulose is ____.
a.
glucose
c.
fructose
b.
lactose
d.
sucrose
 

 36. 
A peptide bond is a bond between which functional groups?
a.
amino and alcohol
c.
carboxyl and alcohol
b.
amino and carboxyl
d.
carbonyl and carbonyl
 

 37. 
Saponification is what type of reaction?
a.
hydrolysis
c.
hydrogenation
b.
dehydrogenation
d.
acid-base
 

Short Answer
 

 38. 
How many more hydrogen atoms does a cyclohexane molecule have than a benzene molecule?
 

 39. 
Write complete, balanced equations for the reaction of 2-pentene and water. Use structural formulas.
 

 40. 
What is the expected product when the following compound is oxidized?
CHsa040-1.jpgCHsa040-2.jpgCHsa040-3.jpgCHsa040-4.jpgOH
 

Essay
 

 41. 
Describe the arrangement of atoms in ethyne. What is the significance of this arrangement?
 

 42. 
Explain how geometric isomers differ from each other. Describe the difference between the trans and cis configurations of geometric isomers. Provide an example of each configuration for a molecule that has geometric isomers.
 

 43. 
Compare the properties of the aldehydes and ketones with the properties of alcohols, ethers, alkanes, and halocarbons.
 

 44. 
Describe the process of making soap.
 



 
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