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Duplicate of Ch. 7 Basic Chemistry Flashcards | StudBud
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Duplicate of Ch. 7 Basic Chemistry
Duplicate of Ch. 7 Basic Chemistry
38 terms
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Milady Chemistry
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Answers
1
A pH of eight is -----times more alkaline than a pH of seven
10
50
100
two
2
Rusting iron and burning wood are examples of a chemical reaction called ..?
suspension
oxidation
acid
element
3
What term refers to the simplest form of chemical matter?
gases
molecules
atoms
elements
4
What has a rigid fixed shape and volume?
liquid
gas
solid
5
Super oxidizers that cause an oxidation reaction and produce a new free radical in the process
solvents
fermentation
free radicals
crystalization
6
What is it called when a chemical changes its state but not its composition?
chemical change
chemical properites
physical change
oxidation
7
A change of one whole number on the pH scale represents a ------- change ... page 168
tenfold
a fraction
twentyfold
a point
8
inorganic substances are flammable..
false
true
9
What term must we know to understand the pH? page 167
ion
cation
hydroxide
anion
10
What causes an atom or molecule to split in tow, creating a pair of ions with opposite charges
ionization
anion
bases
acids
11
How long should a properly-stored emulsion remain stable?
one year
five years
6 months
three years
12
Suspensions contain smaller particles than solutions do...
true
false
13
What is an example of an oil-in-water emulsion?
cooling gel
cleansing milk
moisturizing lotion
thick cream
14
What is an example of a liquid?
serum
ozone
gas
alkalis
15
How is each element identified?
by letter symbols
by color
by graphic symbols
by size
16
Everything known to exist in the universe is either made of -------or ------
matter or energy
atoms and molecules
physical or chemical
liquids or gas
17
Surfactant molecules are
acid and alkaline
hydrophilic and lipophilic
anions and cations
18
An Ion with a positive electrical charge is...
alkali
cation
ionization
Ph
19
What is the most commonly used cosmetic ingredient?
essential oil
water
talc
mineral oil
20
A mixture of two or more mutually miscible substances....
hydrophyllic
solutions
surfactant
21
Has no fixed volume or shape: takes shape and volume of container
solids
gas
acids
liquid
22
What science deals with composition,structure and properties of matter and how it changes?
chemistry
elements
compounds
oxidation
23
Our skin has a protective barrier against certain forms of bacteria and other microorganisms.
oxidation
acid mantle
anion
alkali
24
Estheticians work with chemistry every day...
No
Yes
25
"oil and water don't mix".... page 171
miscible (mixable)
immiscible (nonmixable)
acid
26
What are the two branches of chemistry?
solids and gases
physical and chemical
organic and inorganic
acids and alkalis
27
Has definite volume but takes shape of container...
liquid
solids
gas
ions
28
Substances that have a pH below 7.0, taste sour and turn litmus paper from blue to red are?
acids
alkalis
bases
ions
29
Oil-in-water emulsions are not easily rinsed away with water ..
true
false
30
What is the composition of air by volume?
equal parts oxygen and nitrogen
three parts oxygen and four parts nitrogen
One part oxygen to four parts nitrogen
one part nitrogen and four parts oxygen
31
Have a pH above 7.0, taste bitter and turn litmus paper from red to blue?
cation
Alkali or base
hydrogen
acid
32
Everything except light and electricity is a ---------? page 164
gas
chemical
acid
alkali
33
What is the highest percent acid peel that can be used by an Esthetician?
50%
30%
40%
25%
34
A colorless gaseous element, makes up 4/5 of our air..
Hydrogen peroxide( H2O2)
Oxygen (O)
Hydrogen (H)
nitrogen (N)
35
Chemical reactions in which the oxidizing agent is reduced&reducing agent is oxidized....pg 170
solvents
solutions
redox reactions
antioxidants
36
What is the most abundant element on earth?
Hydrogen
Water
Nitrogen
Oxygen
37
Rapid oxidation of a substance producing light and heat.
cation
chemical
combustion
caustic
38
What is it called when a chemical changes its composition?
matter
chemical change
physical change
mixtures
