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