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Milady Esthetics Chapter 7 Basics of Chemistry Flashcards | StudBud
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Milady Esthetics Chapter 7 Basics of Chemistry
Milady Esthetics Chapter 7 Basics of Chemistry
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Chemistry
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Answers
1
What is light a form of?
liquid
energy
gas
matter
2
What term refers to substances with a pH below 7.0?
alkalis
bases
solutes
acids
3
What is the natural pH of the skin?
5.5
7.5
7.0
3.5
4
What term refers to molecules that contain two or more atoms of the same element?
chemical molecules
atomic molecules
elemental molecules
radiological molecules
5
What are most skin care products?
solutions of oil and water
emulsions of oil & water
reductions of oil and water
suspensions of oil and water
6
How much of the air is made up of nitrogen?
1/4
2/3
4/5
3/8
7
What businesses primarily use oil-in-water emulsions?
fast-food restaurants
salons and spas
auto repair shops
bakeries
8
What is NOT true of atoms?
all matter is composed of atoms
atoms consist of smaller particles
they are small particles of elements
all atoms are identical
9
What is air?
gaseous mixture that makes up the Earth's atmosphere
water vapor that forms clouds
common name for the chemical that makes the sky appear blue
shell of radiation surrounding Earth
10
What is true of moisturizer?
it is a water-in-oil reduction
it is an oil-in-water reduction
it is an oil-in-water emulsion
it is a water-in-oil emulsion
11
What is united with the aid of an emulsifier to create an emulsion?
two or more immiscible substances
two or more miscible substances
a reduction of a solution
a surfactant and a liquid
12
What is an ion?
dust particle left over after the ionization process
spark discharged during the ionization process
atom or molecule that carries an electrical charge
atom or molecule without an electrical charge
13
How much of the Earth's surface, approximately, is water?
75%
25%
100%
10%
14
What is true of elements?
elements are the most complex form of matter
in chemistry, the main elements are sunshine, clouds, rain and snow
there are only five basic elements in the universe
elements are the simplest form of matter
15
What is any substance that is dissolved by a solvent to form a solution?
matter
suspension
solute
emulsion
16
What are suspensions?
unstable mixtures of two or more immiscible substances
stable mixtures of two or more immiscible substances
chemical compounds made from a reduction and a suspension
chemical compounds made from a reduction and a solution
17
What is a solution?
unstable mixture of largest particles
unstable mixture of an emulsion and reduction
uniform mixture of two or more mutually miscible substances
uniform mixture of two or more mutually immiscible substances
18
What type of neutralization reaction forms water and salt?
atom-alkali
solution-compound
reduction-compound
acid-alkali
19
What do antioxidants prevent by neutralizing free radicals?
oxygenation
oxidation
radicalization
ionization
20
What science deals with composition, structure, properties of matter and how matter changes under different conditions?
biology
chemistry
physiology
ergonomics
21
What is an ion with a negative charge?
cation
neutron
anion
molecule
22
What is a difference between water-in-oil (W/O) emulsions and oil-in-water (O/W) emulsions?
O/W emulsions are greasier
O/W emulsions are not easily rinsed away with water
W/O emulsions are greasier
W/O emulsions are easily rinsed away with water
23
What is term that refers to matter in its three physical forms (solid, gas, liquid)?
physical properties
states of matter
chemical properties
appearances of matter
24
What is true of oxygen?
it is the most abundant element on Earth
contrary to popular belief, there is no oxygen in the air
it is the least abundant element on Earth
it should not be ingested because it is poisonous to humans
25
What element is absent from the compounds studied in inorganic chemistry?
oxygen
helium
carbon
nitrogen
26
What are the two branches of chemistry?
anagen and catagen
organic and inorganic
artificial and natural
alkaline and acidic
27
What term means "oil-loving"?
lipocentric
lipophilic
lipoactive
lipophobic
28
What term means "water-loving"?
hydroactive
hydocentric
hydrophilic
hydrophobic
29
What is an atom with a positive electrical charge?
molecule
anion
cation
neutron
30
What does the term miscible mean?
incapable of being inonized
incapable of being mixed
capable of being mixed
capable of being ionized
31
What has physical properties that we can see, smell, taste and touch?
matter
electricity
energy
radiation
32
What causes oxidation?
loss of both oxygen and hydrogen
addition of hydration or loss of oxygen
addition of both oxygen and hydrogen
addition of oxygen or loss of hydrogen
33
What type of substance has a pH level of 7.0?
alkaline
acidic
neutral
toxic
34
What is reduction?
addition of both oxygen and hydrogen
loss of oxygen or the addition of hydrogen
loss of both oxygen and hydrogen
addition of oxygen or loss of hydrogen
35
What element is found in all living things, whether they are plants or animals?
zinc
helium
carbon
radon
36
What are substances with a pH above 7.0?
solutions
alkalis
reductions
acids
37
What is true of each of the approximately 90 naturally occurring elements?
though chemical properties vary, all have the same physical properties
each has its own distinctive physical and chemical properties
all share the same physical and chemical properties
though physical properties vary, all have the same chemical properties
38
What is the study of substances that contain carbon?
organic chemistry
carbon dating
carbon chemistry
organic dating
39
What is true of liquid?
it is matter with fixed volume but no definite shape
it is matter with fixed volume and definite shape
it is matter with no fixed volume and no definite shape
it is matter with no fixed volume but definite shape
40
What is true of water?
the human body is made entirely of water
it is the most abundant of all substances on Earth
water comprises a very small portion of the human body
it is a relatively scarce substance
