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Cosmetology 5: Chemistry

Chemistry

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Question 1 of 20

Which of the following has/have definite weight and volume but no definite shape?

A

hair

B

conditioners, solutions & shampoos

C

Oxygen

D

all of the above

Question 2 of 20

Which of the following is a chemical change?

A

water to ice

B

water to steam

C

oxygen and hydrogen combining to form water

D

raindrops turning to snow

Question 3 of 20

The element that verifies if something is alive or was once living is :  

A

hydrogen

B

carbon

C

nitrogen

D

oxygen

Question 4 of 20

The chemical symbol for carbon is :

A

Ca

B

Co

C

Cb

D

C

Question 5 of 20

The number of electrons oxygen has orbiting around its nucleus is : 

A

2

B

6

C

8

D

10

Question 6 of 20

Amino acids that create proteins are linked together end to end by :

A

alkaline bonds

B

peptide bonds

C

side bonds

D

salt bonds

Question 7 of 20

Putting a sodium hydroxide relaxer under a hair dryer :

A

will link together all protein groups

B

could break the critical peptide bonds and destroy the protein structure

C

will increase the hairs amino acid content

D

could turn into van de waals force

Question 8 of 20

When amino acids combine to form the protein of the hair :

A

the hairs amino acid content will decrease

B

the hairs amino acid content will increase

C

they take on a spiraling configuration

D

the form a new amino acid group

Question 9 of 20

A hydrogen bond :

A

works on the principle that opposites attract

B

is very weak and can be broken by heat or water

C

makes up about 35% of the hairs strength due to sheer numbers

D

all of the above

Question 10 of 20

Acid balanced shampoos :

A

contain low alkaline content and low concentrations of surface active agents

B

do not strip color and are mild

C

are designed to cleanse the hair without correcting any special condition

D

should be used on bleached hair and dry damaged hair

Question 11 of 20

a shampoo with an ingredient to treat hair and scalp problems is : 

A

medicated

B

clarifying

C

dry powder

D

conditioning

Question 12 of 20

A high alkaline shampoo used to remove residue and dirt build up : 

A

medicated

B

clarifying

C

powder dry

D

conditioning

Question 13 of 20

Shampoos for thinning hair :

A

are formulated as gentle shampoos

B

do not cause damage or weigh the hair down

C

can provide ingredients that provide a healthy environment for hair growth

D

all of the above

Question 14 of 20

An acid rinse (pH of 2-3) designed to dissolve soap scum, untangle and separate hair and add sheen is a: 

A

creme rinse

B

medicated rinse

C

vinegar

D

conditioner

Question 15 of 20

Water can be purified by :

A

sedimentation and filtration

B

neutralizing

C

emulsifying

D

shampooing

Question 16 of 20

The primary purpose for shampooing hair is to :

A

clean hair and scalp without adversely affecting either of them

B

increase the acidity of the hair and scalp

C

neutralizing the hair and scalp

D

all of the above

Question 17 of 20

A mixture of an organic substance and a medical agent and usually found in a semi solid form is a(n) :

A

suspension

B

emulsion

C

solution

D

ointment

Question 18 of 20

When a solute is dissolved in a solvent it is a(n) :

A

suspension

B

emulsion

C

solution

D

ointment

Question 19 of 20

The disulfied bond :

A

is the most important to cosmetologist because it is a chemical change

B

is a peptide or end bond

C

is broken and reformed during a perm procedure

D

both A and C

Question 20 of 20

The pH measurement scale:

A

ranges from 0 to 14 with 7 being neutral

B

will indicate an acidic solution if the number is less than 7

C

is logarithmic which means each number step increases by a multiple of ten

D

all of the above

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