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CH 7 Basics of Chemistry Flashcards | StudBud
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CH 7 Basics of Chemistry
What is a characteristic of suspensions?
How are elements identified?
CH 7 Basics of Chemistry
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#Milady #Esthetics Chapter 7
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Answers
1
How are elements identified?
by graphic symbols
by letter symbols
by color
by size
2
What is a characteristic of suspensions?
stable mixture
usually clear
slightly miscible
small particles
3
What is an example of an organic substance?
pure water
iron
plastic
glass
4
How long should a properly-stored emulsion remain stable?
5 years
3 years
1 year
6 months
5
When a substance is oxidized, the oxidizer is always reduced
FALSE
TRUE
6
What does ionization create?
2 new ions with the same electrical charges
2 new ions without an electrical charge
2 new ions with opposite electrical charges
3 new ions with the same electrical charge
7
What is the most abundant element found on earth?
hydrogen
nitrogen
carbon
oxygen
8
It may not be beneficial to the skin for the esthetician to cross over in product lines
TRUE
FALSE
9
What is an example of a liquid?
ice
serum
ozone
steam
10
Inorganic substances are flammable
TRUE
FALSE
11
Understanding chemistry helps you to understand how to layer products in services.
FALSE
TRUE
12
Atoms can be divided into simpler substances by ordinary chemical means
TRUE
FALSE
13
What is an example of an oil-in-water emulsion?
cooling gel
thick cream
cleansing milk
moisturizing lotion
14
A pH of 8 is _____ times more alkaline than a pH of 7
100
2
10
50
15
Most water is pure
TRUE
FALSE
16
Suspensions contain smaller particles than solutions do
TRUE
FALSE
17
Estheticians work with chemistry every day.
TRUE
FALSE
18
What is it called when a chemical changes its state but not its composition?
peristalsis
homeostasis
chemical change
physical change
19
What term refers to the simplest form of chemical matter?
cell
atom
element
molecule
20
What is the general composition of air by volume?
equal parts oxygen and nitrogen
3 parts oxygen 4 parts nitrogen
1 part nitrogen 4 parts oxygen
1 part oxygen 4 parts nitrogen
21
The atoms of each element are different in structure from the atoms of all other elements
FALSE
TRUE
22
What is the range of the pH scale?
1 to 14
0 to 14
1 to 10
0+B17:C18 to 10
23
What is the most commonly used cosmetic ingredient?
talc
essential oil
water
mineral oil
24
A disadvantage of oil-in-water emulsions is that they will not easily rinse away with water
TRUE
FALSE
25
What color does a base turn red litmus paper?
blue
orange
white
green
