Question 1

Which of the following polymers is used in plastic food bags and wraps?

Accepted Answer

A) LDPE 
B) PVC 
C) Polystyrene 
D) HDPE 
E) Polypropylene 
A) LDPE 
B) PVC 
C) Polystyrene 
D) HDPE 
E) Polypropylene

Question 2

The monomer for a polyester has the general formula of RCOOR'.

Accepted Answer

A) True 
 B)False

Question 3

Which of the following polymers is used in plastic bottles and plastic containers?

Accepted Answer

A) LDPE 
B) PVC 
C) Polystyrene 
D) HDPE 
E) Polypropylene 
A) LDPE 
B) PVC 
C) Polystyrene 
D) HDPE 
E) Polypropylene

Question 4

The monomer used to prepare polyvinyl chloride (PVC)is

Accepted Answer

A) CH2=CH2. 
B) CH3CH2Cl. 
C) CH2=CCl2. 
D) CH2=CHCl. 
E) CF2=CF2. 
A) CH2=CH2. 
B) CH3CH2Cl. 
C) CH2=CCl2. 
D) CH2=CHCl. 
E) CF2=CF2.

Question 5

List three materials that can be used to give strength to a composite material.

Accepted Answer

Fiberglass

Question 6

Which type of polymerization reaction involves the combining of monomer molecules with two different functional groups resulting in the elimination of a small molecule,usually water?

Accepted Answer

A) Dehydration polymerization 
B) Radical polymerization 
C) Condensation polymerization 
D) Addition polymerization 
E) Dehydrogenation polymerization 
A) Dehydration polymerization 
B) Radical polymerization 
C) Condensation polymerization 
D) Addition polymerization 
E) Dehydrogenation polymerization

Question 7

Materials with no resistance to the flow of electrons are called

Accepted Answer

A) conductors. 
B) insulators. 
C) superconductors. 
D) semiconductors. 
E) nonconductors. 
A) conductors. 
B) insulators. 
C) superconductors. 
D) semiconductors. 
E) nonconductors.

Question 8

Polymers where the substituents alternate positions along polymer chain are called _______________.

Accepted Answer

The answer of Polymers where the substituents alternate positions along...

Question 9

Which polymer consists mainly of branched chains and is used in plastic food bags and wraps and comes from the addition polymerization of the monomer H2C=CH2?

Accepted Answer

A) Low-density polyethylene (LDP
E)  
B) High-density polyethylene (HDP
E)  
C) Nylon 
D) Dacron 
E) Polyisoprene 
A) Low-density polyethylene (LDP
E)  
B) High-density polyethylene (HDP
E)  
C) Nylon 
D) Dacron 
E) Polyisoprene

Question 10

What is the name of the substances that exhibit properties of flow,conform to the shape of the container,and have a regular arrangement of particles in a lattice?

Accepted Answer

A) Lattice polymers 
B) Polymerization fronts 
C) Biphase polymers 
D) Cophase polymers 
E) Liquid crystals 
A) Lattice polymers 
B) Polymerization fronts 
C) Biphase polymers 
D) Cophase polymers 
E) Liquid crystals

Question 11

One characteristic of the monomers that form condensation polymers that is not common in monomers which form addition polymers is

Accepted Answer

A) the presence of π bonds. 
B) the presence of two functional groups. 
C) the presence of alkyl side chains. 
D) the ability to form free radicals. 
E) the presence of sulfur atoms. 
A) the presence of π bonds. 
B) the presence of two functional groups. 
C) the presence of alkyl side chains. 
D) the ability to form free radicals. 
E) the presence of sulfur atoms.

Question 12

Polyacrylonitrile,characterized by the following repeating unit,is made from which of these monomers?

Accepted Answer

A) CH3CH2CN 
B) HOCH2CH2CH3 
C) CH3CH=CHCN 
D) CH2=CHCN 
E) CH2=CNCH3 
A) CH3CH2CN 
B) HOCH2CH2CH3 
C) CH3CH=CHCN 
D) CH2=CHCN 
E) CH2=CNCH3

Question 13

What is meant by HIPS?

Accepted Answer

A) High polysaccharides 
B) High in polysaccharides 
C) Highly ionic polymer solution 
D) High-impact polystyrene 
E) Highly ionic protein solution 
A) High polysaccharides 
B) High in polysaccharides 
C) Highly ionic polymer solution 
D) High-impact polystyrene 
E) Highly ionic protein solution

Question 14

The segment -CH2CH2CH2CH2CH2CH2- represents the polymer named

Accepted Answer

A) polystyrene. 
B) polypropylene. 
C) polybutylene. 
D) polyhexene. 
E) polyethylene. 
A) polystyrene. 
B) polypropylene. 
C) polybutylene. 
D) polyhexene. 
E) polyethylene.

Question 15

Which polymer is a copolymer of a five-carbon sugar,four different bases (adenine,thymine, guanine,and cytosine),and phosphoric acid?

Accepted Answer

A) ATP 
B) ADP 
C) Kevlar 
D) DNA 
E) RNA 
A) ATP 
B) ADP 
C) Kevlar 
D) DNA 
E) RNA

Question 16

Which element,or combination of elements,could produce a semiconductor with the following band structure? (CB = conduction band,VB = valence band)

Accepted Answer

A) Pure Si 
B) Si and C 
C) Si and In 
D) Si and Sb 
E) Si and F 
A) Pure Si 
B) Si and C 
C) Si and In 
D) Si and Sb 
E) Si and F

Question 17

Which of the following is a natural polymer?

Accepted Answer

A) Rubber 
B) Polyester 
C) Silk 
D) Rubber & polyester 
E) Rubber & silk 
A) Rubber 
B) Polyester 
C) Silk 
D) Rubber & polyester 
E) Rubber & silk

Question 18

Which of the following polymers is a condensation polymer?

Accepted Answer

A) Polystyrene 
B) Teflon 
C) Polyvinylchloride 
D) Polypropylene 
E) Dacron 
A) Polystyrene 
B) Teflon 
C) Polyvinylchloride 
D) Polypropylene 
E) Dacron

Question 19

Magnetic levitation is an example of _____ of superconductors below Tc.

Accepted Answer

A) the Meissner effect 
B) insulation 
C) Oxidation 
D) reduction 
E) the Kamerlingh-Onnes effect 
A) the Meissner effect 
B) insulation 
C) Oxidation 
D) reduction 
E) the Kamerlingh-Onnes effect

Question 20

Most high-temperature superconducting materials are

Accepted Answer

A) metals. 
B) metal chlorides. 
C) polymers. 
D) fullerenes. 
E) ceramics. 
A) metals. 
B) metal chlorides. 
C) polymers. 
D) fullerenes. 
E) ceramics.

Exam 12: Modern Materials

Which of the following polymers is used in plastic food bags and wraps?

The monomer for a polyester has the general formula of RCOOR'.

Which of the following polymers is used in plastic bottles and plastic containers?

The monomer used to prepare polyvinyl chloride (PVC)is

List three materials that can be used to give strength to a composite material.

Which type of polymerization reaction involves the combining of monomer molecules with two different functional groups resulting in the elimination of a small molecule,usually water?

Materials with no resistance to the flow of electrons are called

Polymers where the substituents alternate positions along polymer chain are called _______________.

Which polymer consists mainly of branched chains and is used in plastic food bags and wraps and comes from the addition polymerization of the monomer H2C=CH2?

What is the name of the substances that exhibit properties of flow,conform to the shape of the container,and have a regular arrangement of particles in a lattice?

One characteristic of the monomers that form condensation polymers that is not common in monomers which form addition polymers is

Polyacrylonitrile,characterized by the following repeating unit,is made from which of these monomers?

What is meant by HIPS?

The segment -CH2CH2CH2CH2CH2CH2- represents the polymer named

Which polymer is a copolymer of a five-carbon sugar,four different bases (adenine,thymine, guanine,and cytosine),and phosphoric acid?

Which element,or combination of elements,could produce a semiconductor with the following band structure? (CB = conduction band,VB = valence band)

Which of the following is a natural polymer?

Which of the following polymers is a condensation polymer?

Magnetic levitation is an example of _____ of superconductors below Tc.

Most high-temperature superconducting materials are

Chemistry: the Central Science

Atoms Molecules and Ions

Stoichiometry Ratios of Combination

Reactions in Aqueous Solutions

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Electron Configuration and the Periodic Table

Chemical Bonding I Basic Concepts

Chemical Bonding Ii Molecular Geometry and Bonding Theories

Gases

Intermolecular Forces and the Physical Properties of Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

Electrochemistry

Nuclear Chemistry

Environmental Chemistry

Coordination Chemistry

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Organic Chemistry

Filters

Which polymer consists mainly of branched chains and is used in plastic food bags and wraps and comes from the addition polymerization of the monomer H₂C=CH₂?

The segment -CH₂CH₂CH₂CH₂CH₂CH₂- represents the polymer named

Magnetic levitation is an example of _____ of superconductors below T_c.