Exam 2: Life's Chemical Bases

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Classification. The following are important terms relating to water's special properties. Answer the questions below by matching the descriptions with the most appropriate word. -NaCl becomes this in solution

(Multiple Choice)

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Question 21

The solvent,cohesive,and temperature stabilization properties of water are primarily due to its ____.

(Multiple Choice)

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Question 22

The ____ of an atom have a negative charge.

(Multiple Choice)

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Question 23

The slight positive charge of a hydrogen atom in one water molecule is drawn to the slight negative charge of an oxygen atom in another.This interaction is known as a(n)__________.

(Multiple Choice)

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Question 24

When can we say that atom has no vacancy,or the atom is full?

(Multiple Choice)

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Question 25

Classification. The following are important terms relating to acids and bases. Answer the questions below by matching the descriptions with the most appropriate word. -Set of chemicals that stabilize pH

(Multiple Choice)

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Question 26

The atomic number of an atom refers to its ____.

(Multiple Choice)

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Question 27

The mass number of an atom is determined by the combined masses of its ____.

(Multiple Choice)

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Question 28

When exposed to water,sodium chloride (NaCl)____.

(Multiple Choice)

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Question 29

Classification. The various energy levels in an atom of magnesium (²⁴Mg) have different numbers of electrons. Use the numbers below to answer the following questions. -The number of electrons in the third energy level

(Multiple Choice)

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Question 30

In covalent bonds,____.

(Multiple Choice)

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Question 31

Which bond can break most easily?

(Multiple Choice)

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Question 32

Classification. The following are types of chemical bonds. Answer the questions below by matching the descriptions with the most appropriate bond type. -The bond type holding several molecules of water together

(Multiple Choice)

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Question 33

A(n)__________ is a strong mutual attraction between ions of opposite charge.

(Multiple Choice)

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Question 34

¹⁴C is a radioactive isotope,and it turns into ____________________ when it decays.

(Short Answer)

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Question 35

Classification. The following are types of chemical bonds. Answer the questions below by matching the descriptions with the most appropriate bond type. -The bond between the atoms of table salt (NaCl)

(Multiple Choice)

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Question 36

Blood pH is kept near a value of 7.3-7.5 because of ____.

(Multiple Choice)

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Question 37

The sharing of two pairs of electrons between two atoms is called a(n)____________________.

(Short Answer)

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Question 38

Figure 2.5 C -Which of the following is depicted in the accompanying figure?

(Multiple Choice)

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Question 39

Classification. The following are types of chemical bonds. Answer the questions below by matching the descriptions with the most appropriate bond type. -The bond between the oxygen atoms of oxygen gas (O₂)

(Multiple Choice)

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Question 40

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Exam 2: Life's Chemical Bases

Classification. The following are important terms relating to water's special properties. Answer the questions below by matching the descriptions with the most appropriate word. -NaCl becomes this in solution

The solvent,cohesive,and temperature stabilization properties of water are primarily due to its ____.

The ____ of an atom have a negative charge.

The slight positive charge of a hydrogen atom in one water molecule is drawn to the slight negative charge of an oxygen atom in another.This interaction is known as a(n)__________.

When can we say that atom has no vacancy,or the atom is full?

Classification. The following are important terms relating to acids and bases. Answer the questions below by matching the descriptions with the most appropriate word. -Set of chemicals that stabilize pH

The atomic number of an atom refers to its ____.

The mass number of an atom is determined by the combined masses of its ____.

When exposed to water,sodium chloride (NaCl)____.

Classification. The various energy levels in an atom of magnesium (24Mg) have different numbers of electrons. Use the numbers below to answer the following questions. -The number of electrons in the third energy level

In covalent bonds,____.

Which bond can break most easily?

Classification. The following are types of chemical bonds. Answer the questions below by matching the descriptions with the most appropriate bond type. -The bond type holding several molecules of water together

A(n)__________ is a strong mutual attraction between ions of opposite charge.

14C is a radioactive isotope,and it turns into ____________________ when it decays.

Classification. The following are types of chemical bonds. Answer the questions below by matching the descriptions with the most appropriate bond type. -The bond between the atoms of table salt (NaCl)

Blood pH is kept near a value of 7.3-7.5 because of ____.

The sharing of two pairs of electrons between two atoms is called a(n)____________________.

Figure 2.5 C -Which of the following is depicted in the accompanying figure?

Classification. The following are types of chemical bonds. Answer the questions below by matching the descriptions with the most appropriate bond type. -The bond between the oxygen atoms of oxygen gas (O2)

Invitation to Biology

Molecules of Life

Cell Structure

Ground Rules of Metabolism

Where it Starts—Photosynthesis

How Cells Release Chemical Energy

DNA Structure and Function

From DNA to Protein

Control of Gene Expression

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Studying and Manipulating Genomes

Evidence of Evolution

Processes of Evolution

Organizing Information about Species

Life's Origin and Early Evolution

Viruses, Bacteria, and Archaea

Protists: The Simplest Eukaryotes

The Land Plants

Fungi

Animal Evolution: The Invertebrates

Animal Evolution: The Chordates

Human Evolution

Plant Tissues

Plant Nutrition and Transport

Life Cycles of Flowering Plants

Communication Strategies in Plants

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Structural Support and Movement

Circulation

Immunity

Respiration

Digestion and Nutrition

Maintaining the Internal Environment

Animal Reproductive System

Animal Development

Animal Behavior

Population Ecology

Community Ecology

Ecosystems

The Biosphere

Human Impacts on the Biosphere

Filters

Classification. The various energy levels in an atom of magnesium (²⁴Mg) have different numbers of electrons. Use the numbers below to answer the following questions. -The number of electrons in the third energy level

¹⁴C is a radioactive isotope,and it turns into ____________________ when it decays.

Classification. The following are types of chemical bonds. Answer the questions below by matching the descriptions with the most appropriate bond type. -The bond between the oxygen atoms of oxygen gas (O₂)