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E-Ch 7: Basics of Chemistry Flashcards | StudBud
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E-Ch 7: Basics of Chemistry
E-Ch 7: Basics of Chemistry
25 terms
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#esthetician #miladys
Flashcards
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Questions
25
Answers
1
Range of the pH scale
2-15
7-14
0-14
0-7
2
Uniform mixture of two or more substances
Solution
Combustion
Suspension
Surfactants
3
Simplest form of chemical matter
Molecule
Atom
Cell
Element
4
Droplets of water dispersed in an oil
Oil-in-water emulsion
water-in-oil emulsion
5
Example of an oil-in-water emulsion
Cleansing milk
Cooling gel
Moisturizing lotion
Thick cream
6
Characteristics that can be determined only with a chemical reaction
Chemical properties
Physical properties
7
A pH of 8 is how many times more alkaline than a pH of 7
2
50
100
10
8
The atoms of each element are different structure from the atoms of all other elements
True
False
9
How long should an emulsion remain stable?
5 years
1 year
6 months
3 years
10
Composition of air by volume
One part nitrogen and four parts oxygen
One part oxygen & four parts nitrogen
Three parts oxygen and four parts nitrogen
Equal parts oxygen & nitrogen
11
It is beneficial to the skin for the esthetician to cross over in product lines during services
True
False
12
This is how elements are identified
Graphic symbols
Color
Size
Letter symbols
13
Ionization creates
Two new ions with opposite electrical charges
Two new ions with the same electrical charge
Three new ions with the same electrical charge
Two new ions without an electrical charge
14
Example of a liquid
Ozone
Steam
Ice
Serum
15
Droplets of oil dispersed in water with the aid of an emulsifying agent
Oil-in-water emulsion
Water-in-oil emulsion
16
Example of an organic substance
Iron
Plastic
Glass
Pure water
17
These have neither a definite size nor a definite shape
Gases
Liquids
Solids
Solution
18
Disadvantage of oil-in-water emulsions is that they will not easily rinse way with water
False
True
19
Most commonly used cosmetic ingredient
Water
Rose oil
Oil
Mineral oil
20
What color does a base turn red litmus paper
Blue
Orange
Green
White
21
Characteristic of suspensions
Usually clear
Slightly miscible
Stable mixture
Small particles
22
Most abundant element on earth
Nitrogen
Oxygen
Hydrogen
Carbon
23
A chemical changes its state but not its composition
Physical change
Chemical change
Homeostasis
Peristalsis
24
Estheticians work with chemistry every day
True
False
25
Understanding chemistry helps you to understand how to layer products in services
True
False
