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Unit 3 Exam Flashcards | StudBud
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Unit 3 Exam
Unit 3 Exam
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1
The study of substances that contain carbon is called _____ chemistry.
organic
natural
inorganic
structural
2
You should NOT shampoo a client's hair if which of the following is present?
scalp abrasions
oil
dandruff
controlled hypertension
3
Which of the following is NOT a common shampoo additive?
perfumes
proteins
water
preservatives
4
What should you do if a client requests a scalp treatment, and you notice that they have reddened scalp irritations?
recommend an oily scalp treatment instead
use a gentle shampoo and conditioner
refer the client to a physician
apply an antibacterial ointment
5
A(n) _____ is the basic unit of matter.
molecule
proton
atom
cell
6
A chemical combination of matter in definite (fixed) proportions is called a(n):
emulsion
compound
pure substance
physical mixture
7
A(n) _____ releases a significant amount of heat.
physical change
exothermic reaction
chemical change
endothermic reaction
8
The rapid oxidation of a substance, accompanied by the production of heat and light, is called:
combustion
ionization
reduction
emulsification
9
The hydrophilic end of a surfactant molecule is considered the:
water-attracting head
oil-resistant end
oil-attracting tail
water-resistant end
10
The process in which water passes through a porous substance to remove suspended materials is called:
distillation
filtration
chlorination
sedimentation
11
There are _____ naturally occurring elements.
131
118
79
98
12
An elemental molecule is a molecule containing:
two or more atoms of two different elements in definite proportions
two or more atoms of the same element in definite proportions
two or more atoms of the same element in indefinite proportions
a single atom
13
Substances lacking the element _____ are classified as inorganic.
oxygen
hydrogen
silicon
carbon
14
A chemical combination of two or more atoms of different elements in definite proportions is a(n):
element
compound
elemental molecule
ion
15
The overlapping layers or scales of natural bristle brushes are used to:
dry the hair shaft
strip the hair in preparation for coloring
loosen scales from the scalp
clean and add luster to the hair
16
The oil-attracting tail of a surfactant molecule is termed:
lipophilic
primary
deionized
hydrophilic
17
The second ingredient most shampoos have in common is the primary surfactant or:
deionized water
conditioning agent
artificial color
base detergent
18
Hair that has been lightened, colored, or permed is categorized as:
oily
dry
chemically treated
normal
19
When performing a shampoo, the most important rule regarding posture is to always:
keep your wrists flexed
use only your fingertips
relax your abdomen
keep your shoulders back
20
Which water treatment process is often used in the manufacturing of cosmetics?
distillation
filtration
sedimentation
chlorination
21
Which of the following is the most widely purchased of all hair care products?
conditioning products
hair gels
semipermanent haircolor
shampoo products
22
Matter does NOT exist in which form?
solid
liquid
gas
energy
23
Which of the following substances is classified as a universal solvent?
water
alcohol
bleach
peroxide
24
A(n) _____ is a chemical combination of two or more atoms in definite (fixed) proportions.
molecule
element
ion
cell
25
Characteristics of matter that do not involve chemically changing a substance are called _____ properties.
primary
static
physical
chemical
26
When a substance undergoes a _____ change, a new substance with different properties is created.
primary
chemical
static
physical
27
A shampoo with a pH of _____ closely matches the ideal pH of hair.
8
6
3
10
28
The simplest form of chemical matter is a(n):
atom
cell
neutron
element
29
Any substance that occupies space and has mass (weight) is considered:
light
matter
energy
carbon
