AnswersChemistryProperties and Uses of Unsaturated Hydrocarbons

Properties and Uses of Unsaturated Hydrocarbons — Quiz Answers

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1
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Rubber is manufactured from latex that is produced from rubber trees. Which statement about rubber is true?

A
It is made from the polymerization of a long chain of aromatic molecules.
B
It is made from the polymerization of a long chain of alkene molecules.
C
It is made from the polymerization of a short chain of chloroprene molecules.
D
It is made from the polymerization of a short chain of styrene molecules.
2
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Which is composed of alkynes?

A
rubber tires
B
margarine
C
polystyrene cups
D
acetylene
3

What is the name for this molecule? Expand Image

A
1-octene
B
1-octyne
C
nonene
D
nonane
4

Which of the molecules is propyne?

A
Image with description Two carbons are double bonded to each other; the pair is single bonded to H above left, below left, and below right, and to C H 3 above right.
B
Image with description An H is single bonded to C, which is triple bonded to another C, which in turn is single bonded to a C which is bonded to H above, below, and right.
C
Image with description An H is single bonded to C, which is triple bonded to another C, which in turn is single bonded to a C with H above and below and yet another C to the right; the final C is bonded to H above, below, and right.
D
Image with description Two carbons are double bonded to each other; the pair is single bonded to C H 3 above left and right, and to H below left and right.
5

Which is composed of aromatic hydrocarbons?

A
clothing
B
barbeque fuel
C
pain relievers
D
polyvinyl chloride
6

Which property is characteristic of alkenes, alkynes, and aromatic hydrocarbons?

A
They are insoluble in water.
B
They are soluble in water.
C
Their pH values are greater than 7 .
D
Their vapor pressures decrease as their size increases.
7

Which is a property of alkynes?

A
Alkynes tend to be acidic.
B
Alkynes have a neutral pH .
C
Alkynes tend to be soluble in water.
D
Alkynes are not combustible
8

What is the name for this molecule? Expand Image

A
3-heptene
B
3-hexene
C
3-hexyne
D
3-heptyne
9

Which is a property of both alkenes and alkynes?

A
Their densities are all much higher than that of water.
B
Their boiling points tend to increase with chain length.
C
The pH of these hydrocarbons tends to be very basic.
D
Both are highly water soluble.
10

Which product is made up of fatty acids that are derived from alkenes?

A
polystyrene cups
B
pain relievers
C
rubber tires
D
margarine

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