Question 1

Soap molecules cluster in structures called _____.

Accepted Answer

A)  polymers. 
B)  detergents. 
C)  micelles. 
D)  colloids. 
E)  surfactants. 
A)  polymers. 
B)  detergents. 
C)  micelles. 
D)  colloids. 
E)  surfactants. C

Question 2

A mixture of one substance dispersed in a finely divided state throughout another is known as a _____.

Accepted Answer

A)  polymer 
B)  surfactant 
C)  micelle 
D)  colloidal suspension 
E)  soap 
A)  polymer 
B)  surfactant 
C)  micelle 
D)  colloidal suspension 
E)  soap D

Question 3

Which of the following type of hair will have the lowest amount of melanin?

Accepted Answer

A)  Black hair 
B)  White hair 
C)  Red hair 
D)  Brown hair 
E)  Dark blonde hair 
A)  Black hair 
B)  White hair 
C)  Red hair 
D)  Brown hair 
E)  Dark blonde hair B

Question 4

Which of these interactions between keratin strands is/are broken and reformed to "permanently" curl hair?
I. A salt bridge
II. A hydrogen bond
III. A disulfide linkage

Accepted Answer

A)  I only 
B)  II only 
C)  III only 
D)  I and III 
E)  I, II, and III 
A)  I only 
B)  II only 
C)  III only 
D)  I and III 
E)  I, II, and III

Question 5

Which of these substances serve as a "balling" reducer and an additional stain remover in detergents?

Accepted Answer

A)  Phosphates 
B)  Fillers 
C)  Enzymes 
D)  Zeolites 
E)  Builders 
A)  Phosphates 
B)  Fillers 
C)  Enzymes 
D)  Zeolites 
E)  Builders

Question 6

Which of these classes of polymers describe(s) polyethylene?
I. Thermoplastic
II. Copolymer
III. Addition polymer

Accepted Answer

A)  I only 
B)  II only 
C)  I and III 
D)  II and III 
E)  I, II, and III 
A)  I only 
B)  II only 
C)  I and III 
D)  II and III 
E)  I, II, and III

Question 7

A polymer formed by attaching monomer units one after another without the loss of any atoms is known as a(n) _____.

Accepted Answer

A)  thermopolymer 
B)  condensation polymer 
C)  copolymer 
D)  addition polymer 
E)  elastomer 
A)  thermopolymer 
B)  condensation polymer 
C)  copolymer 
D)  addition polymer 
E)  elastomer

Question 8

Which of these is not a problem associated with soap in hard water?

Accepted Answer

A)  Formation of non-biodegradable products 
B)  Formation of bathtub rings 
C)  Formation of insoluble precipitates 
D)  Formation of gray films on dishes and clothes 
E)  None of these 
A)  Formation of non-biodegradable products 
B)  Formation of bathtub rings 
C)  Formation of insoluble precipitates 
D)  Formation of gray films on dishes and clothes 
E)  None of these

Question 9

Which two substances are responsible for the natural color of hair?

Accepted Answer

A)  Sebum and melanin 
B)  Sebum and peroxides 
C)  Melanin and phaeomelanin 
D)  Anionic surfactants and peroxides 
E)  Ammonium compounds and sulfide compounds 
A)  Sebum and melanin 
B)  Sebum and peroxides 
C)  Melanin and phaeomelanin 
D)  Anionic surfactants and peroxides 
E)  Ammonium compounds and sulfide compounds

Question 10

Which of these classes of polymers best describes rubber?

Accepted Answer

A)  Copolymer 
B)  Condensation polymer 
C)  Thermopolymer 
D)  Addition polymer 
E)  Elastomer 
A)  Copolymer 
B)  Condensation polymer 
C)  Thermopolymer 
D)  Addition polymer 
E)  Elastomer

Question 11

Which of the following are combined to produce nylon?

Accepted Answer

A)  An alcohol and an amide 
B)  An alcohol and an amine 
C)  An acid and an amide 
D)  An acid and an amine 
E)  None of these 
A)  An alcohol and an amide 
B)  An alcohol and an amine 
C)  An acid and an amide 
D)  An acid and an amine 
E)  None of these

Question 12

Which of these substances is trapped in the center of a micelle when it is formed?

Accepted Answer

A)  Soap 
B)  Grease 
C)  Water 
D)  Bleach 
E)  None of these 
A)  Soap 
B)  Grease 
C)  Water 
D)  Bleach 
E)  None of these

Question 13

A middle note in a perfume results from molecules that are _____ and _____ volatile than molecules that produce top notes in a perfume.

Accepted Answer

A)  smaller; more 
B)  smaller; less 
C)  larger; more 
D)  thicker; more 
A)  smaller; more 
B)  smaller; less 
C)  larger; more 
D)  thicker; more

Question 14

Which of these processes is used to make rubber more elastic?

Accepted Answer

A)  Condensation 
B)  Reduction 
C)  Addition 
D)  Vulcanization 
E)  Sublimation 
A)  Condensation 
B)  Reduction 
C)  Addition 
D)  Vulcanization 
E)  Sublimation

Question 15

What is the primary function of a builder in laundry detergents?

Accepted Answer

A)  To act as an emulsifying agent 
B)  To remove grease and other nonpolar stains 
C)  To remove hard water ions such as Mg2+ and Ca2+ 
D)  To increase the tensile strength of a fabric 
E)  To accelerate the natural biodegradation process of a surfactant 
A)  To act as an emulsifying agent 
B)  To remove grease and other nonpolar stains 
C)  To remove hard water ions such as Mg2+ and Ca2+ 
D)  To increase the tensile strength of a fabric 
E)  To accelerate the natural biodegradation process of a surfactant

Question 16

Colloidal suspensions are a type of _____.

Accepted Answer

A)  emulsions 
B)  polymers 
C)  lipids 
D)  surfactants 
E)  reducing agents 
A)  emulsions 
B)  polymers 
C)  lipids 
D)  surfactants 
E)  reducing agents

Question 17

A soap is classified as a(n) _____.

Accepted Answer

A)  lipid. 
B)  oil. 
C)  surfactant. 
D)  plastic. 
E)  enzyme. 
A)  lipid. 
B)  oil. 
C)  surfactant. 
D)  plastic. 
E)  enzyme.

Question 18

Which of these ions found in hard water reduces the effectiveness of a soap?

Accepted Answer

A)  Ca2+ 
B)  C4 −  
C)  F −  
D)  Ag+ 
E)  Hg2+ 
A)  Ca2+ 
B)  C4 −  
C)  F −  
D)  Ag+ 
E)  Hg2+

Question 19

Which of these substances contains sodium ions that exchange places with calcium ions in hard water?

Accepted Answer

A)  Phosphates 
B)  Sodium carbonate 
C)  Zeolites 
D)  Bleaches 
E)  Sodium tripolyphosphate 
A)  Phosphates 
B)  Sodium carbonate 
C)  Zeolites 
D)  Bleaches 
E)  Sodium tripolyphosphate

Question 20

Which of the following statements about the pH of hair products holds true?

Accepted Answer

A)  It should be strongly acidic. 
B)  It should be strongly alkaline. 
C)  It should be neutral to slightly alkaline. 
D)  It should be neutral to slightly acidic 
E)  It should be slightly alkaline. 
A)  It should be strongly acidic. 
B)  It should be strongly alkaline. 
C)  It should be neutral to slightly alkaline. 
D)  It should be neutral to slightly acidic 
E)  It should be slightly alkaline.

Soap molecules cluster in structures called _____.

A mixture of one substance dispersed in a finely divided state throughout another is known as a _____.

Which of the following type of hair will have the lowest amount of melanin?

Which of these interactions between keratin strands is/are broken and reformed to "permanently" curl hair? I. A salt bridge II. A hydrogen bond III. A disulfide linkage

Which of these substances serve as a "balling" reducer and an additional stain remover in detergents?

Which of these classes of polymers describe(s) polyethylene? I. Thermoplastic II. Copolymer III. Addition polymer

A polymer formed by attaching monomer units one after another without the loss of any atoms is known as a(n) _____.

Which of these is not a problem associated with soap in hard water?

Which two substances are responsible for the natural color of hair?

Which of these classes of polymers best describes rubber?

Which of the following are combined to produce nylon?

Which of these substances is trapped in the center of a micelle when it is formed?

A middle note in a perfume results from molecules that are _ and _ volatile than molecules that produce top notes in a perfume.

Which of these processes is used to make rubber more elastic?

What is the primary function of a builder in laundry detergents?

Colloidal suspensions are a type of _____.

A soap is classified as a(n) _____.

Which of these ions found in hard water reduces the effectiveness of a soap?

Which of these substances contains sodium ions that exchange places with calcium ions in hard water?

Which of the following statements about the pH of hair products holds true?

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Exam 15: The Chemistry of Household Products

Soap molecules cluster in structures called _____.

A mixture of one substance dispersed in a finely divided state throughout another is known as a _____.

Which of the following type of hair will have the lowest amount of melanin?

Which of these interactions between keratin strands is/are broken and reformed to "permanently" curl hair? I. A salt bridge II. A hydrogen bond III. A disulfide linkage

Which of these substances serve as a "balling" reducer and an additional stain remover in detergents?

Which of these classes of polymers describe(s) polyethylene? I. Thermoplastic II. Copolymer III. Addition polymer

A polymer formed by attaching monomer units one after another without the loss of any atoms is known as a(n) _____.

Which of these is not a problem associated with soap in hard water?

Which two substances are responsible for the natural color of hair?

Which of these classes of polymers best describes rubber?

Which of the following are combined to produce nylon?

Which of these substances is trapped in the center of a micelle when it is formed?

A middle note in a perfume results from molecules that are _____ and _____ volatile than molecules that produce top notes in a perfume.

Which of these processes is used to make rubber more elastic?

What is the primary function of a builder in laundry detergents?

Colloidal suspensions are a type of _____.

A soap is classified as a(n) _____.

Which of these ions found in hard water reduces the effectiveness of a soap?

Which of these substances contains sodium ions that exchange places with calcium ions in hard water?

Which of the following statements about the pH of hair products holds true?

Molecular Reasons

The Chemists Toolbox

Atoms and Elements

Molecules, Compounds, and Chemical Reactions

Chemical Bonding

Organic Chemistry

Light and Color

Nuclear Chemistry

Energy for Today

Energy for Tomorrow: Solar and Other Renewable Energy Sources

The Air Around Us

The Liquids and Solids Around Us: Especially Water

Acids and Bases: the Molecules Responsible for Sour and Bitter

Oxidation and Reduction

Biochemistry and Biotechnology

Drugs and Medicine: Healing, Helping, and Hurting

The Chemistry of Food

Nanotechnology Online Only

Filters

A middle note in a perfume results from molecules that are _ and _ volatile than molecules that produce top notes in a perfume.