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Ch.7 Basics of Chemistry Flashcards | StudBud
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Ch.7 Basics of Chemistry
Most water is pure
Estheticians work with chemistry everday?
Ch.7 Basics of Chemistry
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1
Estheticians work with chemistry everday?
True
False
2
Most water is pure
False
True
3
What is it called when a chemical changes its state but not its compostition?
chemical change
peristalsis
homeostasis
physical change
4
How are elements identified?
by size
by graohic symbols
by letter symbols
by color
5
What is the most abundant element found on earth?
carbon
nitrogen
hydrogen
oxygen
6
What does ionization create?
two new ions with the same electrical charge
two new ions with opposite electrical charges
two new ions without an electrical charge
three new ions with the same electrical charge
7
Understanding chemistry helps you to understand how to layer products and sevices
False
True
8
What is the most commonly used cosmetic ingredient?
mineral oil
water
essential oil
talc
9
What is the general composition of air by volume?
one part oxygen and four parts nitrogen
equal parts oxygen and nitrogen
three parts oxygen and four parts nitrogen
one part nitrogen and four parts oxygen
10
When a substance is oxidized, the oxidizer is always reduced
True
False
11
What is an example of an organic substance?
iron
glass
pure water
plastic
12
A disadvantage of oil-in-water emulsions is that they will not easily rinse away with water
False
True
13
Atoms can be divided into simpler substances by ordinary chemical means
True
False
14
The atoms of each element are different in structure from the atoms of all other elements
False
True
15
What term refers to the simplest form of chemical matter?
cell
molecule
element
atom
16
A pH of eight is ______times more alkaline than a pH of seven
50
100
two
10
17
What is the range of the pH scale?
1 to 10
1 to 14
0 to 14
0 to 10
18
Suspensions contain smaller particles than solutions do
True
False
19
What color does a base turn red litmus paper?
blue
white
orange
green
20
What is an example of a liquid ?
ice
steam
ozone
serum
21
Inorganic substances are flammable
True
False
22
What is an example of an oil-in-water emulsion?
cleansing milk
moisturizing lotion
cooling gel
thick cream
23
It may not be beneficial to the skin for the esthetician to cross over in product lines when providing services
True
False
24
What is a characteristic of suspensions?
stable mixture
usually clear
small particles
slightly miscible
25
How long should a properly-stored emulsion remain stable?
three years
six months
one year
five years
