Question 1

Which components of an atom have negative charges? I.
Electrons
II)
Protons
III)
Neutrons

Accepted Answer

A)  I only 
B)  II only 
C)  III only 
D)  I and II 
E)  II and III 
A)  I only 
B)  II only 
C)  III only 
D)  I and II 
E)  II and III

Question 2

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

Accepted Answer

A)  ability to promote hydrophilic interactions. 
B)  ionic bonds. 
C)  hydrogen bonds. 
D)  ability to promote hydrophobic interactions. 
E)  nonpolar nature. 
A)  ability to promote hydrophilic interactions. 
B)  ionic bonds. 
C)  hydrogen bonds. 
D)  ability to promote hydrophobic interactions. 
E)  nonpolar nature.

Question 3

Classification.The following are types of chemical bonds.Answer the questions below by matching the descriptions with the most appropriate bond type.
a.hydrogen
b.ionic
c.covalent
d.polar covalent
e.double bond
-the bond between the atoms of table salt (NaCl)

Accepted Answer

The answer of Classification.The following are types of chemical bonds.Answer...

Question 4

In ____ bonds, both atoms exert the same pull on shared electrons.

Accepted Answer

A)  nonpolar covalent 
B)  polar covalent 
C)  double covalent 
D)  triple covalent 
E)  coordinate covalent 
A)  nonpolar covalent 
B)  polar covalent 
C)  double covalent 
D)  triple covalent 
E)  coordinate covalent

Question 5

-Which of the following is false concerning the atom in the figure?

Accepted Answer

A)  The number of protons and the number of electrons are equal. 
B)  It has an atomic mass of 4. 
C)  Electrons are moving around the nucleus. 
D)  It has an atomic number of 2. 
E)  The number of electrons exceeds the number of protons. 
A)  The number of protons and the number of electrons are equal. 
B)  It has an atomic mass of 4. 
C)  Electrons are moving around the nucleus. 
D)  It has an atomic number of 2. 
E)  The number of electrons exceeds the number of protons.

Question 6

Classification.The following are types of chemical bonds.Answer the questions below by matching the descriptions with the most appropriate bond type.
a.hydrogen
b.ionic
c.covalent
d.polar covalent
e.double bond
-the bond between the oxygen atoms of oxygen gas (O2)

Accepted Answer

Question 7

Water is important to the interactions of biological molecules because it

Accepted Answer

A)  promotes hydrophobic and hydrophilic interactions. 
B)  stabilizes temperature. 
C)  is an excellent solvent for polar and ionic substances. 
D)  has strong cohesive properties. 
E)  does all of these. 
A)  promotes hydrophobic and hydrophilic interactions. 
B)  stabilizes temperature. 
C)  is an excellent solvent for polar and ionic substances. 
D)  has strong cohesive properties. 
E)  does all of these.

Question 8

Classification.The following are types of chemical bonds.Answer the questions below by matching the descriptions with the most appropriate bond type.
a.hydrogen
b.ionic
c.covalent
d.polar covalent
e.double bond
-Two pairs of electrons shared between two atoms is called a __________.

Accepted Answer

The answer of Classification.The following are types of chemical bonds.Answer...

Question 9

Which statement is NOT true?

Accepted Answer

A)  Electrons closest to the nucleus are at the lowest energy level. 
B)  No more than two electrons can occupy a single orbital. 
C)  Electrons are unable to move out of the assigned orbital space. 
D)  The innermost orbital holds two electrons. 
E)  At the second energy level there are four possible orbitals with a total of eight electrons. 
A)  Electrons closest to the nucleus are at the lowest energy level. 
B)  No more than two electrons can occupy a single orbital. 
C)  Electrons are unable to move out of the assigned orbital space. 
D)  The innermost orbital holds two electrons. 
E)  At the second energy level there are four possible orbitals with a total of eight electrons.

Question 10

Which components of an atom do not have a charge? I.
Electrons
II)
Protons
III)
Neutrons

Accepted Answer

A)  I only 
B)  II only 
C)  III only 
D)  I and II 
E)  II and III 
A)  I only 
B)  II only 
C)  III only 
D)  I and II 
E)  II and III

Question 11

Carbon dioxide is an example of a(n)

Accepted Answer

A)  atom. 
B)  ion. 
C)  compound. 
D)  mixture. 
E)  element. 
A)  atom. 
B)  ion. 
C)  compound. 
D)  mixture. 
E)  element.

Question 12

The bond in table salt (NaCl) is

Accepted Answer

A)  polar. 
B)  ionic. 
C)  covalent. 
D)  double. 
E)  nonpolar. 
A)  polar. 
B)  ionic. 
C)  covalent. 
D)  double. 
E)  nonpolar.

Question 13

The radioactive decay of 14C produces

Accepted Answer

A)  carbon 12. 
B)  carbon 13. 
C)  more carbon 14. 
D)  nitrogen 14. 
E)  oxygen 14. 
A)  carbon 12. 
B)  carbon 13. 
C)  more carbon 14. 
D)  nitrogen 14. 
E)  oxygen 14.

Exam 2: Lifes Chemical Basis

Which components of an atom have negative charges? I. Electrons II) Protons III) Neutrons

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

Classification.The following are types of chemical bonds.Answer the questions below by matching the descriptions with the most appropriate bond type. a.hydrogen b.ionic c.covalent d.polar covalent e.double bond -the bond between the atoms of table salt (NaCl)

In ____ bonds, both atoms exert the same pull on shared electrons.

-Which of the following is false concerning the atom in the figure?

Classification.The following are types of chemical bonds.Answer the questions below by matching the descriptions with the most appropriate bond type. a.hydrogen b.ionic c.covalent d.polar covalent e.double bond -the bond between the oxygen atoms of oxygen gas (O2)

Water is important to the interactions of biological molecules because it

Classification.The following are types of chemical bonds.Answer the questions below by matching the descriptions with the most appropriate bond type. a.hydrogen b.ionic c.covalent d.polar covalent e.double bond -Two pairs of electrons shared between two atoms is called a __________.

Which statement is NOT true?

Which components of an atom do not have a charge? I. Electrons II) Protons III) Neutrons

Carbon dioxide is an example of a(n)

The bond in table salt (NaCl) is

The radioactive decay of 14C produces

Invitation to Biology

Molecules of Life

Cell Structure and Function

Ground Rules of Metabolism

Where It Startsphotosynthesis

How Cells Release Chemical Energy

Dna Structure and Function

From Dna to Protein

Gene Control

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

Lifes Origin and Early Evolution

Viruses and Prokaryotes

Protiststhe Simplest Eukaryotes

The Land Plants

Fungi

Animal Evolutionthe Invertebrates

Animal Evolutionthe Chordates

Animal Evolutionhuman 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 Systems

Animal Development

Animal Behavior

Population Ecology

Community Ecology

Ecosystems

The Biosphere

Human Impacts on the Biosphere

Filters

Classification.The following are types of chemical bonds.Answer the questions below by matching the descriptions with the most appropriate bond type. a.hydrogen b.ionic c.covalent d.polar covalent e.double bond -the bond between the oxygen atoms of oxygen gas (O₂)

The radioactive decay of ¹⁴C produces