AnswersCT-Chemistry BProperties and Uses of Unsaturated Hydrocarbons

Properties and Uses of Unsaturated Hydrocarbons Answers

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1
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What is the name for this molecule?

Question illustration
A
3-heptyne
B
3-heptene
C
3-hexyne
D
3-hexene
2
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Which property is characteristic of alkenes, alkynes, and aromatic hydrocarbons?

A
Their vapor pressures decrease as their size increases.
B
Their pH values are greater than 7.
C
They are insoluble in water.
D
They are soluble in water.
3

Which is a property of alkynes?

A
Alkynes have a neutral pH.
B
Alkynes tend to be acidic.
C
Alkynes tend to be soluble in water.
D
Alkynes are not combustible
4

Which step in naming unsaturated hydrocarbons is used for alkenes but not alkynes?

A
Identify the longest chain of carbon atoms.
B
Examine the multiple bond for cis- and trans- isomers.
C
Number the chain of carbons, starting with the end nearest the multiple bond.
D
Add a number prefix indicating the first carbon atom in the multiple bond.
5

Which is composed of alkynes?

A
acetylene
B
margarine
C
rubber tires
D
polystyrene cups
6

What is the name of a hydrocarbon that has the formula CH3(CH2)4CCH?

A
6-heptyne
B
1-heptene
C
1-heptyne
D
6-heptene
7

Plant oils are made up of small organic molecules that are called terpenes. The compound below is an example of one type of terpene.Which best describes this compound?

Question illustration
A
a manufactured, branched-chain alkyne
B
a naturally occurring, aromatic hydrocarbon
C
a manufactured, straight-chain alkene
D
a naturally occurring, branched-chain alkene
8

Consider the hydrocarbon below.What is the name of this hydrocarbon?

Question illustration
A
propene
B
pentene
C
butene
D
ethene
9

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

A
margarine
B
polystyrene cups
C
pain relievers
D
rubber tires
10

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 short chain of chloroprene molecules.
C
It is made from the polymerization of a long chain of alkene molecules.
D
It is made from the polymerization of a short chain of styrene molecules.

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