Question 1

Which of the following statements about biodegradable polymers is true?

Accepted Answer

A)  They will degrade quickly in a landfill. 
B)  Thermosetting polymers are biodegradable, but thermoplastics are not. 
C)  They often require specific temperatures or the presence of microorganisms in order to undergo degradation. 
D)  Polyvinyl chloride is a biodegradable polymer. 
A)  They will degrade quickly in a landfill. 
B)  Thermosetting polymers are biodegradable, but thermoplastics are not. 
C)  They often require specific temperatures or the presence of microorganisms in order to undergo degradation. 
D)  Polyvinyl chloride is a biodegradable polymer.

Question 2

Which of the following is a naturally occurring polymer?

Accepted Answer

A)  celluloid 
B)  nylon 
C)  starch 
D)  None of the above is a naturally occurring polymer. 
A)  celluloid 
B)  nylon 
C)  starch 
D)  None of the above is a naturally occurring polymer.

Question 3

An object will be used in an environment that has a temperature range of -20°C to 10°C. The object must remain flexible and rubbery. It should have a Tg that is

Accepted Answer

A)  greater than 10°C. 
B)  less than 10°C but greater than -20°C. 
C)  exactly -20°C. 
D)  less than -20°C. 
A)  greater than 10°C. 
B)  less than 10°C but greater than -20°C. 
C)  exactly -20°C. 
D)  less than -20°C.

Question 4

In the vulcanization of rubber, sulfur

Accepted Answer

A)  is inserted into the carbon chain. 
B)  breaks long carbon chains into smaller chains. 
C)  forms links between polymer chains. 
D)  links all chains into one long chain. 
A)  is inserted into the carbon chain. 
B)  breaks long carbon chains into smaller chains. 
C)  forms links between polymer chains. 
D)  links all chains into one long chain.

Question 5

The word polymer means

Accepted Answer

A)  many parts. 
B)  many sides. 
C)  many rings. 
D)  many carbons. 
A)  many parts. 
B)  many sides. 
C)  many rings. 
D)  many carbons.

Question 6

The main use of elastomers is

Accepted Answer

A)  automobile tires. 
B)  synthetic body parts. 
C)  waxed paper. 
D)  wigs. 
A)  automobile tires. 
B)  synthetic body parts. 
C)  waxed paper. 
D)  wigs.

Question 7

One of the advantages of incinerating plastics is

Accepted Answer

A)  the high fuel value. 
B)  no air pollution. 
C)  all polymers burn efficiently. 
D)  All of the above are advantages of incinerating plastics. 
A)  the high fuel value. 
B)  no air pollution. 
C)  all polymers burn efficiently. 
D)  All of the above are advantages of incinerating plastics.

Question 8

Which of the following will result from adding a plasticizer to a polymer?

Accepted Answer

A)  They will have a higher glass transition temperature, Tg. 
B)  They will be more rigid. 
C)  They will be more transparent. 
D)  They will be less brittle. 
A)  They will have a higher glass transition temperature, Tg. 
B)  They will be more rigid. 
C)  They will be more transparent. 
D)  They will be less brittle.

Question 9

LDPE finds applications as

Accepted Answer

A)  plastic film. 
B)  threaded bottle caps. 
C)  drain pipes. 
D)  plastic television trays. 
A)  plastic film. 
B)  threaded bottle caps. 
C)  drain pipes. 
D)  plastic television trays.

Question 10

Thermosetting resins will decompose rather than melt when they are heated to a high temperature.

Accepted Answer

A) True 
 B)False

Question 11

Polyethylene has double bonds, but ethylene does not.

Accepted Answer

A) True 
 B)False

Question 12

The segment of a polymer shown below represents a

Accepted Answer

A)  polyamide. 
B)  polyester. 
C)  polyethylene. 
D)  polystyrene. 
A)  polyamide. 
B)  polyester. 
C)  polyethylene. 
D)  polystyrene.

Question 13

The most widely used synthetic polymer is

Accepted Answer

A)  polyethylene. 
B)  polyvinyl chloride. 
C)  polystyrene. 
D)  polytetrafluoroethylene (Teflon). 
A)  polyethylene. 
B)  polyvinyl chloride. 
C)  polystyrene. 
D)  polytetrafluoroethylene (Teflon).

Question 14

Polyvinyl acetate is used for

Accepted Answer

A)  carpet. 
B)  chewing gum resin. 
C)  yarns. 
D)  floor tile. 
A)  carpet. 
B)  chewing gum resin. 
C)  yarns. 
D)  floor tile.

Question 15

This formula in which n can be a very large number represents which of the following polymers?

Accepted Answer

A)  polyethylene 
B)  polyvinyl chloride 
C)  polypropylene 
D)  Teflon 
A)  polyethylene 
B)  polyvinyl chloride 
C)  polypropylene 
D)  Teflon

Question 16

Which of the following is NOT true of composite materials?

Accepted Answer

A)  They contain high-strength fibers, often made from glass, graphite or ceramics. 
B)  The fibers provide support to the composite material. 
C)  The fibers are usually held together by a thermosetting condensation polymer. 
D)  The composite materials are not very strong. 
A)  They contain high-strength fibers, often made from glass, graphite or ceramics. 
B)  The fibers provide support to the composite material. 
C)  The fibers are usually held together by a thermosetting condensation polymer. 
D)  The composite materials are not very strong.

Which of the following statements about biodegradable polymers is true?

Which of the following is a naturally occurring polymer?

An object will be used in an environment that has a temperature range of -20°C to 10°C. The object must remain flexible and rubbery. It should have a T_g that is

In the vulcanization of rubber, sulfur

The word polymer means

The main use of elastomers is

One of the advantages of incinerating plastics is

Which of the following will result from adding a plasticizer to a polymer?

LDPE finds applications as

Thermosetting resins will decompose rather than melt when they are heated to a high temperature.

Polyethylene has double bonds, but ethylene does not.

The segment of a polymer shown below represents a

The most widely used synthetic polymer is

Polyvinyl acetate is used for

This formula in which n can be a very large number represents which of the following polymers?

Which of the following is NOT true of composite materials?

Chemistry

Atoms

Atomic Structure

Chemical Bonds

Chemical Accounting

Gases, Liquids, Solids, and Intermolecular Forces

Acids and Bases

Oxidation and Reduction

Organic Chemistry

Nuclear Chemistry

Chemistry of the Earth

Air

Water

Energy

Biochemistry

Food

Drugs

Fitness and Health

Chemistry Down on the Farm

Household Chemicals

Poisons

Filters

Exam 10: Polymers

Which of the following statements about biodegradable polymers is true?

Which of the following is a naturally occurring polymer?

An object will be used in an environment that has a temperature range of -20°C to 10°C. The object must remain flexible and rubbery. It should have a Tg that is

In the vulcanization of rubber, sulfur

The word polymer means

The main use of elastomers is

One of the advantages of incinerating plastics is

Which of the following will result from adding a plasticizer to a polymer?

LDPE finds applications as

Thermosetting resins will decompose rather than melt when they are heated to a high temperature.

Polyethylene has double bonds, but ethylene does not.

The segment of a polymer shown below represents a

The most widely used synthetic polymer is

Polyvinyl acetate is used for

This formula in which n can be a very large number represents which of the following polymers?

Which of the following is NOT true of composite materials?

Chemistry

Atoms

Atomic Structure

Chemical Bonds

Chemical Accounting

Gases, Liquids, Solids, and Intermolecular Forces

Acids and Bases

Oxidation and Reduction

Organic Chemistry

Nuclear Chemistry

Chemistry of the Earth

Air

Water

Energy

Biochemistry

Food

Drugs

Fitness and Health

Chemistry Down on the Farm

Household Chemicals

Poisons

Filters

An object will be used in an environment that has a temperature range of -20°C to 10°C. The object must remain flexible and rubbery. It should have a T_g that is