Ch 20 Flashcards
_____ give you the ability to permanently change the hair’s natural wave and curl pattern, thereby
offering clients a variety of styling options that would not otherwise be possible.
a. Chemical hair softening
b. Chemical texture services
c. Natural hair services
d. Alternative texture services
b. Chemical texture services
Without a thorough understanding of \_\_\_\_\_, cosmetologists could damage hair, cause hair loss, and harm their clients and themselves. a. chemistry b. immunology c. color theory d. branding
a. chemistry
What tough exterior layer of the hair has the purpose of surrounding the inner layers and protecting the hair from damage? a. Hair shaft b. Cuticle c. Cortex d. Medulla
b. Cuticle
Which layer of the hair is located directly beneath the cuticle layer and is responsible for the incredible strength and elasticity of human hair? a. Hair shaft b. Cuticle c. Cortex d. Medulla
c. Cortex
Which layer of hair is the innermost layer of the hair, and often called the pith or core of the hair?
a. Hair shaft
b. Cuticle
c. Cortex
d. Medulla
d. Medulla
The term pH is an abbreviation used for potential \_\_\_\_\_, and the symbol pH represents the quantity of \_\_\_\_\_ ions in solution. a. hydrogen; hydrogen b. hydrogen; oxygen c. oxygen; oxygen d. oxygen; nitrogen
a. hydrogen; hydrogen
The \_\_\_\_\_ measures the acidity and alkalinity of a substance by measuring the quantity of hydrogen ions it contains. a. oxygen content b. pH scale c. salinity d. radioactivity level
b. pH scale
The range of numbers used in the pH scale is _____.
a. 0 to 5
b. 0 to 7
c. 0 to 10
d. 0 to 14
d. 0 to 14
Chemical hair texturizers temporarily raise the pH of the hair to an alkaline state in order to _____.
a. expand and harden the shaft
b. harden and close the shaft
c. swell and set the shaft
d. soften and swell the shaft
d. soften and swell the shaft
In the restructuring process, coarse, resistant hair with a strong compact cuticle requires a chemical solution that is \_\_\_\_\_. a. slightly alkaline b. mildly acidic c. strongly acidic d. highly alkaline
d. highly alkaline
What are the basic building blocks of hair that affect how chemical solutions react?
a. Amino acids, peptide bonds, polypeptide chains, keratin proteins, and square bonds
b. Amino acids, peptide bonds, polypeptide chains, keratin proteins, and hydrogen bonds
c. Amino acids, peptide bonds, polypeptide chains, keratin proteins, and oxygen
d. Amino acids, peptide bonds, polypeptide chains, keratin proteins, and side bonds
d. Amino acids, peptide bonds, polypeptide chains, keratin proteins, and side bonds
Which compounds are made up of carbon, oxygen, hydrogen, nitrogen, and sulfur?
a. Amino acids
b. Peptide bonds
c. Polypeptide chains
d. Keratin proteins
a. Amino acids
Which chemical bonds, also known as end bonds, join amino acids together, end-to-end in long chains, to form a polypeptide chain? a. Amino acids b. Peptide bonds c. Polypeptide chains d. Keratin proteins
b. Peptide bonds
What are long, coiled polypeptide chains linked together end-to-end like beads?
a. Amino acids
b. Peptide bonds
c. Polypeptide chains
d. Keratin proteins
d. Keratin proteins
The cortex of the hair is made up of millions of polypeptide chains cross-linked by three types of side
bonds that are responsible for the elasticity and strength of the hair. These bonds are _____.
a. disulfide, trisulfide, and hydrogen
b. disulfide, salt, and hydrogen
c. disulfide, salt, and oxygen
d. disulfide, chlorine, and hydrogen
b. disulfide, salt, and hydrogen
What chemical side bonds are formed when two sulfur-type chains are joined together?
a. Disulfide bonds
b. Peptide bonds
c. Keratin bonds
d. Amino acids
a. Disulfide bonds
Which bonds are relatively weak physical side bonds resulting from an attraction between negative
and positive electrical charges, and are easily broken by changes in pH?
a. Disulfide bonds
b. Salt bonds
c. Hydrogen bonds
d. Keratin proteins
b. Salt bonds
Hydrogen bonds are weak physical side bonds that result from an attraction between negative and
positive electrical charges and are easily broken by water or heat, but reform as the hair is _____.
a. stretched
b. dried
c. softened
d. styled
b. dried
_____ is a two-step process in which the hair first undergoes a physical change caused by wrapping
the hair on perm rods, and then a chemical change caused by the application of permanent waving solution and neutralizer.
a. Cascade curling
b. Chemical texture service
c. Permanent waving
d. Temporary waving
c. Permanent waving
What determines the size of the curl in a permanent waving process?
a. The size of the rod
b. The length of the hair
c. The texture of the hair
d. The color of the hair
a. The size of the rod
In permanent waving, the shape and type of curl are determined by the shape and type of rod and the \_\_\_\_\_. a. long rods b. hair length c. sectioning d. wrapping method
d. wrapping method
Once in the cortex, the waving solution breaks the disulfide bonds through a chemical reaction called \_\_\_\_\_. a. rearranging b. normalization c. reduction d. alkaline
c. reduction
In permanent waving, the reduction reaction is due to the addition of _____.
a. hydrogen
b. oxygen
c. sodium
d. carbon
a. hydrogen
What are the most common reducing agents used in permanent waving?
a. Ammonia water
b. Hydrogen peroxide
c. Thioglycolic acids
d. Hydrogen acids
c. Thioglycolic acids
The \_\_\_\_\_ of the permanent waving solution is determined primarily by the concentration of the reducing agent, or thio. a. durability b. shelf-life c. strength d. concentration
c. strength
The active ingredient or reducing agent in alkaline permanent waves is _____.
a. ammonium thioglycolate
b. hydrogen thioglycolate
c. alkaline acids
d. glyceryl monothioglycolate
a. ammonium thioglycolate
What is the second factor in the overall strength of the waving solution?
a. Ammonium thioglycolate
b. Degree of alkalinity
c. Amount used
d. Length of the hair
b. Degree of alkalinity
Alkaline waves, also known as _____, were developed in 1941.
a. weak waves
b. strong waves
c. cold waves
d. hot waves
c. cold waves
Most alkaline permanent waves have a pH between _____.
a. 4.5 and 5.5
b. 6.0 and 7.0
c. 9.0 and 9.6
d. 10.0 and 11.0
c. 9.0 and 9.6
What is the main active ingredient in true acid and acid-balanced waving lotions?
a. Glyceryl monothioglycolate
b. Ammonium thioglycolic
c. Sodium hydroxide
d. Sodium hydrochloride
a. Glyceryl monothioglycolate
All acid waves have three components: permanent waving lotion, neutralizer, and _____.
a. conditioner
b. prewrap
c. stabilizer
d. activator
d. activator
Most acid waves used in salons have a pH value between _____.
a. 5.5 and 6.5
b. 7.8 and 8.2
c. 9.0 and 10.0
d. 10.1 and 10.5
b. 7.8 and 8.2
Modern acid waves are actually \_\_\_\_\_ waves, which are permanent waves that have a 7.0 or neutral pH. a. weaker b. stronger c. acid-balanced d. alkaline-balanced
c. acid-balanced
Exothermic waves create a chemical reaction that heats the waving solution and speeds up _____.
a. processing
b. conditioning
c. neutralizing
d. formulation
a. processing