What is true of water?

It is the most abundant substance on earth

What is true of oxygen?

it is the most abundant element on earth

uniform mixture of two or more miscible substances

What causes oxidation?

addition of oxygen or the loss of hydrogen

What is true of elements?

Elements are the simplest form of matter

atom or molecule that carries an electrical charge

What are suspensions?

Unstable mixtures of two or more immiscible substances

Loss of oxygen or the addition of hydrogen

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Chapter 7 State board theory

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Questions 18

Answers

1
What is true of water?
It is the most abundant substance on earth
Water comprises a very small portion of the human body
The human body is made entirely of water
It is a relatively scarce substance
2
What is true of oxygen?
it is the most abundant element on earth
it is the least abundant element on earth
there is no oxygen in the air
it should not be ingested because it is poisonous
3
What term refers to substances with a pH below 7.0?
Solutes
Bases
Alkalis
Acids
4
How much of the air is made up of nitrogen?
One quarter
Two-thirds
Four-fifths
Three-eighths
5
What is a solution?
uniform mixture of two or more miscible substances
unstable mixture of largest particles
uniform mixture of two or more mutually immiscible substances
unstable mixture of an emulsion and a reduction
6
What is the study of substances that contain carbon?
Organic chemistry
Carbon dating
Carbon chemistry
Organic dating
7
What does the term miscible mean?
capable of being mixed
incapable of being mixed
incapable of being ionized
capable of being ionized
8
What terms means “water-loving”?
Hydrophobic
Hydroactive
Hydrophilic
Hydro centric
9
What causes oxidation?
addition of oxygen or the loss of hydrogen
addition of hydrogen or loss of oxygen
loss of both oxygen and hydrogen
addition of both oxygen and hydrogen
10
What is the natural pH of the skin?
7.5
5.5
7.0
3.5
11
What term means “oil-loving”?
Lipocentric
Lipoactive
Lipophobic
Lipophilic
12
What is true of elements?
Elements are the most complex form of matter
Elements are the simplest form of matter
In chemistry, the main elements are sunshine and snow
There are only five basic elements in the universe
13
What is an ion?
atom or molecule without an electrical charge
spark discharged during the ionization process
dust particle left over after the ionization process
atom or molecule that carries an electrical charge
14
What are the two branches of chemistry?
Alkaline and acidic
Organic and inorganic
Anagen and Catagen
Artificial and natural
15
What are suspensions?
Chemical compounds made from a reduction and a suspension
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
16
What is reduction?
Loss of both oxygen and hydrogen
Loss of oxygen or the addition of hydrogen
Addition of both oxygen and hydrogen
Addition of oxygen or the loss of hydrogen
17
What are substances with a pH above 7.0?
Acids
Reductions
Alkalis
Solutions
18
What type of substance has a pH level of 7.0?
Toxic
Alkaline
Acidic
Neutral

Chapter 7 State board theory Flashcards | StudBud