What is true of liquid?

it is matter with fixed volume but no definite shape

What is true of moisturizer?

it is an oil-in-water (O/W) emulsion

What is true of water?

it is the most abundant of all substances on Earth

gaseous mixture that makes up the Earth's atmosphere

What are suspensions?

unstable mixtures of two or more immiscible substances

What is true of elements?

elements are the simplest form of matter

atom or molecule that carries an electrical charge

uniform mixture of two or more mutually immiscible substances

What is united with the aid of an emulsifier to create an emulsion?

two or more immiscible substances

What causes oxidation?

addition of oxygen or the loss of hydrogen

loss of oxygen or the addition of hydrogen

What is true of each of the approximately 90 naturally occuring elements?

each has its own distinctive physical and chemical properties

What is true of oxygen?

it is the most abundant element on Earth

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Esthetics CH 7 - Basics of Chemistry, Milady 11th Edition

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Questions 40

Answers

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

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