Question 1

A polymer that softens when heated or hardens when cooled is known as a(n) _____.

Accepted Answer

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

Question 2

The ideal moisture content of skin is _____.

Accepted Answer

A)  0% 
B)  10% 
C)  20% 
D)  30% 
E)  40% 
A)  0% 
B)  10% 
C)  20% 
D)  30% 
E)  40%

Question 3

Which of these are not molecular forces that hold hair strands together?
I. Disulfide linkages
II. Hydrogen bonds
III. Nonpolar hydrocarbon tails

Accepted Answer

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

Question 4

Which of these is not a substituted polyethylene polymer?

Accepted Answer

A)  Polypropylene 
B)  Polyvinyl chloride 
C)  Polystyrene 
D)  Polyisobutylene 
E)  All of these are substituted polyethylenes 
A)  Polypropylene 
B)  Polyvinyl chloride 
C)  Polystyrene 
D)  Polyisobutylene 
E)  All of these are substituted polyethylenes

Question 5

Which of these is not a class of detergents?

Accepted Answer

A)  Hydrated 
B)  Cationic 
C)  Anionic 
D)  Nonionic 
E)  None of these 
A)  Hydrated 
B)  Cationic 
C)  Anionic 
D)  Nonionic 
E)  None of these

Question 6

Which of these substances is secreted from the glands on the scalp to keep hair from drying out?

Accepted Answer

A)  Bleaches 
B)  Buffers 
C)  Enzymes 
D)  Zeolites 
E)  Sebum 
A)  Bleaches 
B)  Buffers 
C)  Enzymes 
D)  Zeolites 
E)  Sebum

Question 7

Which of the following is/are true of colloidal solutions?
I. Groups of molecules clump together in colloidal solutions to form small particles.
II. A laser beam cannot be seen when it is passed through colloidal solutions.
III. A laser beam can be seen clearly when it is passed through colloidal solutions.
IV. Incident light passes through colloidal solutions without scattering/

Accepted Answer

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

Question 8

Identify the type of detergent the given structure represents. ​

Accepted Answer

A)  Cationic 
B)  Anionic 
C)  Nonionic 
D)  Hydrated 
E)  Neutral 
A)  Cationic 
B)  Anionic 
C)  Nonionic 
D)  Hydrated 
E)  Neutral

Question 9

Which of these is the primary problem with alkylbenzenesufonates (ABS) detergents?

Accepted Answer

A)  They are non-biodegradable. 
B)  They are expensive. 
C)  They have limited effect on fabric. 
D)  They form curd on bathtubs. 
E)  None of these 
A)  They are non-biodegradable. 
B)  They are expensive. 
C)  They have limited effect on fabric. 
D)  They form curd on bathtubs. 
E)  None of these

Question 10

Which of these substances are  not found in ordinary laundry detergents?

Accepted Answer

A)  Bleaches 
B)  Sebum 
C)  Enzymes 
D)  Zeolites 
E)  Builders 
A)  Bleaches 
B)  Sebum 
C)  Enzymes 
D)  Zeolites 
E)  Builders

Question 11

Identify the characteristic(s) of a soap. ​
I. It acts at surfaces.
II. It contains a polar hydrocarbon tail.
III. Its abundance in  water results in micelles.

Accepted Answer

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

Question 12

Which of these substances can be used to lighten hair?

Accepted Answer

A)  Hydrogen peroxide 
B)  Melanin 
C)  Phaeomelanin 
D)  Surfactants 
E)  Builders 
A)  Hydrogen peroxide 
B)  Melanin 
C)  Phaeomelanin 
D)  Surfactants 
E)  Builders

Question 13

Which of these represent(s) characteristic(s) of LAS detergents but not of ABS detergents?
I. They are biodegradable.
II. They form branched alkyl chains.
III. They are anionic detergents.

Accepted Answer

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

Question 14

Which of the following is most likely to be found in the monomer of an addition polymer?

Accepted Answer

A)  An alcohol group 
B)  A carbon - carbon double bond 
C)  A nitrogen atom 
D)  A carbon - oxygen double bond 
E)  None of these 
A)  An alcohol group 
B)  A carbon - carbon double bond 
C)  A nitrogen atom 
D)  A carbon - oxygen double bond 
E)  None of these

Question 15

Identify the substance(s) that act as the emulsifying agent(s) in a mixture of soap, water, and grease.

Accepted Answer

A)  Water 
B)  Grease 
C)  Soap 
D)  Grease and soap 
E)  Water and grease 
A)  Water 
B)  Grease 
C)  Soap 
D)  Grease and soap 
E)  Water and grease

Question 16

Identify the substance used to oxidize tough stains on fabrics.

Accepted Answer

A)  Grease 
B)  Surfactants 
C)  Polymers 
D)  Micelles 
E)  Bleaches 
A)  Grease 
B)  Surfactants 
C)  Polymers 
D)  Micelles 
E)  Bleaches

Question 17

Which of these substances are the primary component in conditioners?

Accepted Answer

A)  Anionic surfactants 
B)  Cationic surfactants 
C)  Fragrances 
D)  Nonionic surfactants 
E)  Sodium lauryl sulfates 
A)  Anionic surfactants 
B)  Cationic surfactants 
C)  Fragrances 
D)  Nonionic surfactants 
E)  Sodium lauryl sulfates

Question 18

Which of these products are not an emulsion of oil and water?
I. Creams
II. Lotions
III. Foundations
IV. Perfumes

Accepted Answer

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

Question 19

When soapy water is added to grease or oil, the soap molecule's _____ interacts with nonpolar grease and its _____ interacts with polar water.

Accepted Answer

A)  hydrocarbon tail; ionic head 
B)  ionic head; hydrocarbon tail 
C)  micelle; hydrocarbon tail 
D)  hydrocarbon tail; micelle 
E)  ionic head; micelle 
A)  hydrocarbon tail; ionic head 
B)  ionic head; hydrocarbon tail 
C)  micelle; hydrocarbon tail 
D)  hydrocarbon tail; micelle 
E)  ionic head; micelle

Question 20

Brighteners absorb _____ light and emit _____ light.

Accepted Answer

A)  visible; ultraviolet 
B)  visible; infrared 
C)  ultraviolet; infrared 
D)  infrared; microwave 
E)  ultraviolet; visible 
A)  visible; ultraviolet 
B)  visible; infrared 
C)  ultraviolet; infrared 
D)  infrared; microwave 
E)  ultraviolet; visible

A polymer that softens when heated or hardens when cooled is known as a(n) _____.

The ideal moisture content of skin is _____.

Which of these are not molecular forces that hold hair strands together? I. Disulfide linkages II. Hydrogen bonds III. Nonpolar hydrocarbon tails

Which of these is not a substituted polyethylene polymer?

Which of these is not a class of detergents?

Which of these substances is secreted from the glands on the scalp to keep hair from drying out?

Identify the type of detergent the given structure represents.

Which of these is the primary problem with alkylbenzenesufonates (ABS) detergents?

Which of these substances are not found in ordinary laundry detergents?

Identify the characteristic(s) of a soap. I. It acts at surfaces. II. It contains a polar hydrocarbon tail. III. Its abundance in water results in micelles.

Which of these substances can be used to lighten hair?

Which of these represent(s) characteristic(s) of LAS detergents but not of ABS detergents? I. They are biodegradable. II. They form branched alkyl chains. III. They are anionic detergents.

Which of the following is most likely to be found in the monomer of an addition polymer?

Identify the substance(s) that act as the emulsifying agent(s) in a mixture of soap, water, and grease.

Identify the substance used to oxidize tough stains on fabrics.

Which of these substances are the primary component in conditioners?

Which of these products are not an emulsion of oil and water? I. Creams II. Lotions III. Foundations IV. Perfumes

When soapy water is added to grease or oil, the soap molecule's _ interacts with nonpolar grease and its _ interacts with polar water.

Brighteners absorb _ light and emit _ light.

Molecular Reasons

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Exam 15: The Chemistry of Household Products

A polymer that softens when heated or hardens when cooled is known as a(n) _____.

The ideal moisture content of skin is _____.

Which of these are not molecular forces that hold hair strands together? I. Disulfide linkages II. Hydrogen bonds III. Nonpolar hydrocarbon tails

Which of these is not a substituted polyethylene polymer?

Which of these is not a class of detergents?

Which of these substances is secreted from the glands on the scalp to keep hair from drying out?

Identify the type of detergent the given structure represents. ​

Which of these is the primary problem with alkylbenzenesufonates (ABS) detergents?

Which of these substances are not found in ordinary laundry detergents?

Identify the characteristic(s) of a soap. ​ I. It acts at surfaces. II. It contains a polar hydrocarbon tail. III. Its abundance in water results in micelles.

Which of these substances can be used to lighten hair?

Which of these represent(s) characteristic(s) of LAS detergents but not of ABS detergents? I. They are biodegradable. II. They form branched alkyl chains. III. They are anionic detergents.

Which of the following is most likely to be found in the monomer of an addition polymer?

Identify the substance(s) that act as the emulsifying agent(s) in a mixture of soap, water, and grease.

Identify the substance used to oxidize tough stains on fabrics.

Which of these substances are the primary component in conditioners?

Which of these products are not an emulsion of oil and water? I. Creams II. Lotions III. Foundations IV. Perfumes

When soapy water is added to grease or oil, the soap molecule's _____ interacts with nonpolar grease and its _____ interacts with polar water.

Brighteners absorb _____ light and emit _____ light.

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

Identify the type of detergent the given structure represents.

Identify the characteristic(s) of a soap. I. It acts at surfaces. II. It contains a polar hydrocarbon tail. III. Its abundance in water results in micelles.

When soapy water is added to grease or oil, the soap molecule's _ interacts with nonpolar grease and its _ interacts with polar water.

Brighteners absorb _ light and emit _ light.