Question 1

The last step in hair curling is to roll the hair on curlers and treat the rolled hair with hydrogen peroxide (neutralizer).This causes

Accepted Answer

A) new disulfide bonds to form. 
B) old disulfide bonds to break. 
C) amino acids to reform into a new sequence. 
D) cysteines to be inserted into the primary structure. 
A) new disulfide bonds to form. 
B) old disulfide bonds to break. 
C) amino acids to reform into a new sequence. 
D) cysteines to be inserted into the primary structure.

Question 2

Soaps are

Accepted Answer

A) anionic surfactants. 
B) nonionic surfactants. 
C) neutral surfactants. 
D) positive surfactants. 
A) anionic surfactants. 
B) nonionic surfactants. 
C) neutral surfactants. 
D) positive surfactants.

Question 3

An agent that stabilizes the suspension of nonpolar substances in water is called a surfactant.

Accepted Answer

A) True 
 B)False

Question 4

Sunscreens contain chemicals that

Accepted Answer

A) absorb both UV-A and UV-B rays. 
B) absorb neither UV-A nor UV-B rays. 
C) inhibit melanin production in the skin. 
D) promote melanin production in skin. 
A) absorb both UV-A and UV-B rays. 
B) absorb neither UV-A nor UV-B rays. 
C) inhibit melanin production in the skin. 
D) promote melanin production in skin.

Question 5

The main ingredient in oven cleaners is

Accepted Answer

A) acetic acid (vinegar). 
B) bleach. 
C) citric acid. 
D) sodium hydroxide. 
A) acetic acid (vinegar). 
B) bleach. 
C) citric acid. 
D) sodium hydroxide.

Question 6

Detergents and abrasives are the major active ingredients in

Accepted Answer

A) colognes. 
B) shampoos. 
C) skin creams. 
D) toothpastes. 
A) colognes. 
B) shampoos. 
C) skin creams. 
D) toothpastes.

Question 7

Which of the following cosmetics contain the greatest amount of fragrant compounds?

Accepted Answer

A) perfumes 
B) colognes 
C) aftershave lotions 
D) toothpaste 
A) perfumes 
B) colognes 
C) aftershave lotions 
D) toothpaste

Question 8

Why are drain cleaners usually bases?

Accepted Answer

Drain cleaners are usually bases because

Question 9

Hair is most efficiently "permanently" dyed by

Accepted Answer

A) soaking hair in the colored dye. 
B) adding colorless reactants that react in the hair to form the desired color. 
C) using water soluble dyes. 
D) None of the above dyes hair efficiently. 
A) soaking hair in the colored dye. 
B) adding colorless reactants that react in the hair to form the desired color. 
C) using water soluble dyes. 
D) None of the above dyes hair efficiently.

Question 10

The principal material of tooth enamel is

Accepted Answer

A) fluoride. 
B) collagen. 
C) hydroxyapatite. 
D) protein. 
A) fluoride. 
B) collagen. 
C) hydroxyapatite. 
D) protein.

Question 11

A soap has a long hydrophilic tail and a charged hydrophobic head.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following is NOT an advantage of soap? Soap is

Accepted Answer

A) biodegradable. 
B) derived from renewable resources. 
C) an excellent cleaner in hard water. 
D) relatively nontoxic. 
A) biodegradable. 
B) derived from renewable resources. 
C) an excellent cleaner in hard water. 
D) relatively nontoxic.

Question 13

Which water softener "ties up" calcium ions and keeps them in solution?

Accepted Answer

A) sodium carbonate 
B) sodium phosphate 
C) fatty acids 
D) zeolites 
A) sodium carbonate 
B) sodium phosphate 
C) fatty acids 
D) zeolites

Question 14

An advantage of potassium soaps is that they are ________ than sodium soaps.

Accepted Answer

A) softer 
B) harder 
C) more neutral 
D) stronger 
A) softer 
B) harder 
C) more neutral 
D) stronger

Question 15

The ideal moisture content of skin is approximately

Accepted Answer

A) 3%. 
B) 10%. 
C) 16%. 
D) 75%. 
A) 3%. 
B) 10%. 
C) 16%. 
D) 75%.

Question 16

When we buy products for household use,we should avoid products whose packaging is

Accepted Answer

A) reusable. 
B) recyclable. 
C) degradable. 
D) longest lasting. 
A) reusable. 
B) recyclable. 
C) degradable. 
D) longest lasting.

Question 17

A cosmetic that is a suspension of water in oil is called a

Accepted Answer

A) cream. 
B) sunscreen. 
C) moisturizer. 
D) wax. 
A) cream. 
B) sunscreen. 
C) moisturizer. 
D) wax.

Question 18

Household bleach mixed with bleach is safe to use.

Accepted Answer

A) True 
 B)False

Question 19

Water softeners remove all of the following ions EXCEPT

Accepted Answer

A) Ca²⁺. 
B) Fe²⁺. 
C) Mg²⁺. 
D) Na⁺. 
A) Ca²⁺. 
B) Fe²⁺. 
C) Mg²⁺. 
D) Na⁺.

Question 20

Substances added to surfactants to increase their detergency are

Accepted Answer

A) brighteners. 
B) builders. 
C) emulsifiers. 
D) enzymes. 
A) brighteners. 
B) builders. 
C) emulsifiers. 
D) enzymes.

Exam 21: Household Chemicals

The last step in hair curling is to roll the hair on curlers and treat the rolled hair with hydrogen peroxide (neutralizer).This causes

Soaps are

An agent that stabilizes the suspension of nonpolar substances in water is called a surfactant.

Sunscreens contain chemicals that

The main ingredient in oven cleaners is

Detergents and abrasives are the major active ingredients in

Which of the following cosmetics contain the greatest amount of fragrant compounds?

Why are drain cleaners usually bases?

Hair is most efficiently "permanently" dyed by

The principal material of tooth enamel is

A soap has a long hydrophilic tail and a charged hydrophobic head.

Which of the following is NOT an advantage of soap? Soap is

Which water softener "ties up" calcium ions and keeps them in solution?

An advantage of potassium soaps is that they are ________ than sodium soaps.

The ideal moisture content of skin is approximately

When we buy products for household use,we should avoid products whose packaging is

A cosmetic that is a suspension of water in oil is called a

Household bleach mixed with bleach is safe to use.

Water softeners remove all of the following ions EXCEPT

Substances added to surfactants to increase their detergency are

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