What causes oxidation?

Addition of oxygen or the loss of hydrogen

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

Two or more immiscible substances

Atom or molecule that carries an electrical charge

What are suspensions?

Unstable mixtures of two or more immiscible substances

What is true of elements?

Elements are the simplest form of matter

Gaseous mixture that makes up the earths atmosphere

What is true of oxygen?

It is the most abundant element on earth

Uniform mixture of two or more mutually miscible substances

Loss of oxygen or the addition of hydrogen

What is true of water?

It is the most abundant of all substances on earth

What is true of liquid?

It is matter with fixed volume but no definite shape

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

Each has its own distinctive physical and chemical properties

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Ch. 7 Basics of Chemistry

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Questions 39

Answers

1
What are the two branches of chemistry?
Organic and inorganic
Alkaline and acidic
Artificial and natural
Anagen and Catagen
2
What term refers to substances with a pH below 7.0
Solutes
Acids
Alkalis
Bases
3
What causes oxidation?
Addition of both oxygen and hydrogen
Addition of oxygen or the loss of hydrogen
Loss of both oxygen and hydrogen
Addition of hydrogen or the loss of oxygen
4
What is NOT true of atoms?
They are small particles of elements
Atoms consist of smaller particles
All atoms are identical
All matter is composed of atoms
5
What is the study of substances that contain carbon?
Organic chemistry
Carbon dating
Organic dating
Carbon chemistry
6
What is united with the aid of an emulsifier to create an emulsion?
Two or more immiscible substances
Two or more miscible substances
A surfactant and a liquid
A reduction and a solution
7
What is an ion?
Atom or molecule that carries an electrical charge
Spark discharged during the ionization process
Atom or molecule without an electrical charge
Dust particle left over after the ionization process
8
What are suspensions?
Stable mixtures of two or more immiscible substances
Unstable 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
9
What is an atom with a positive electrical charge?
Molecule
Anion
Cation
Neutron
10
What is true of moisturizer?
It is a water-in-oil reduction
It is an oil-in-water reduction
It is a water-in-oil emulsion
It is an oil-in-water emulsion
11
What is true of elements?
Elements are the most complex form of matter
There are only five basic elements in the universe
In chemistry, the main elements are sunshine, clouds, rain and snow
Elements are the simplest form of matter
12
What is air?
Shell of radiation surrounding earth
Gaseous mixture that makes up the earths atmosphere
Common name for the chemical that makes the sky appear blue
Water vapor that forms clouds
13
What is true of oxygen?
It is the most abundant element on earth
It is the least abundant element on earth
Contrary to popular belief, there is no oxygen in the air
It should not be ingested because it is poisonous to humans
14
What is a difference between W/O emulsions and O/W emulsions
O/W emulsions are not easily rinsed away with water
W/O emulsions are greasier
W/O emulsions are easily rinsed away with water
O/W emulsions are greasier
15
What is a solution?
Uniform mixture of two or more mutually immiscible substances
Unstable mixture of the largest particles
Uniform mixture of two or more mutually miscible substances
Unstable mixture of an emulsion and a reduction
16
What is reduction?
Addition of both oxygen and hydrogen
Addition of oxygen or the loss of hydrogen
Loss of both oxygen and hydrogen
Loss of oxygen or the addition of hydrogen
17
What is any substance that is dissolved by a solvent to form a solution?
Solute
Suspension
Matter
Emulsion
18
What is the natural pH of the skin
7.0
3.5
5.5
7.5
19
What element is absent from the compounds studied in inorganic chemistry?
Oxygen
Nitrogen
Helium
Carbon
20
What type of neutralization reaction forms water and salt?
Atom alkali
Reduction compound
Acid alkali
Solution compound
21
What term refers to molecules that contain two or more atoms of the same element?
Atomic molecules
Chemical molecules
Radiological molecules
Elemental molecules
22
What businesses primarily use oil-in-water emulsions?
Fast food restaurants
Auto repair shops
Salons and spas
Bakeries
23
What is light a form of?
Liquid
Gas
Matter
Energy
24
What is an ion with a negative charge?
Cation
Anion
Neutron
Molecule
25
What term means oil loving?
Lipophilic
Lipocentric
Lipophobic
Lipoactive
26
How much of the earths surface, approximately, is water
75 percent
100 percent
10 percent
25 percent
27
What is true of water?
The human body is made entirely of water
It is a relatively scarce substance
Water comprises a very small portion of the human body
It is the most abundant of all substances on earth
28
How much of the air is made up of nitrogen?
Four-fifths
Three-eighths
Two-thirds
One-quarter
29
What type of substances have a pH level of 7.0
Alkaline
Acidic
Neutral
Toxic
30
What are most skin care products?
Emulsions of oil and water
Solutions of oil and water
Suspensions of oil and water
Reductions of oil and water
31
What are substances with a pH above 7.0
Acids
Solutions
Alkalis
Reductions
32
What element is found in all living things, whether they are plants or animals
Helium
Zinc
Radon
Carbon
33
What is true of liquid?
It is matter with no fixed volume and no definite shape
It is matter with fixed volume but no definite shape
It is matter with no fixed volume but definite shape
It is matter with fixed volume and definite shape
34
What term means ‘water-loving’
Hydrophilic
Hydrophobic
Hydro active
Hydro centric
35
What is the term that refers to matter in its three physical forms?
Chemical properties
Appearances of matter
States of matter
Physical properties
36
What does the term miscible mean?
Capable of being mixed
Capable of being ionized
Incapable of being ionized
Incapable of being mixed
37
What is true of each of the approximately 90 naturally occurring elements?
All share the same physical and chemical properties
Though physical properties vary, all have the same chemical properties
Though chemical properties vary, all have the same physical properties
Each has its own distinctive physical and chemical properties
38
What do antioxidants prevent by neutralizing free radicals?
Ionization
Oxygenation
Radicalization
Oxidation
39
What has physical properties that we can see, smell, taste and touch?
Energy
Matter
Radiation
Electricity

Ch. 7 Basics of Chemistry Flashcards | StudBud