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Test Bank for Linne and Ringsrud’s Clinical Laboratory Science 7th Edition Turgeon
Test Bank for Linne and Ringsrud’s Clinical Laboratory Science 7th Edition Turgeon
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DOWNLOAD THE Test Bankfor Biological Science 3rd
Edition Freeman
Biological Science, 3rd Canadian Edition (Freeman et al.)
Chapter 2 Water and Carbon: The Chemical Basis of Life
1) How many electrons are involved in a single covalent bond?
A) one
B) two
C) three
D) four
Answer: B
Type: MC
Reference: Section 2.1
Bloom's Taxonomy: Remembering
LO: 2-1. Describe how and why atoms interact to form molecules. Sketch examples of how
electron pairs are shared in nonpolar covalent bonds, polar covalent bonds, and ionic bonds.
2) How many electrons are involved in a double covalent bond?
A) one
B) two
C) three
D) four
Answer: D
Type: MC
Reference: Section 2.1
Bloom's Taxonomy: Remembering
LO: 2-1. Describe how and why atoms interact to form molecules. Sketch examples of how
electron pairs are shared in nonpolar covalent bonds, polar covalent bonds, and ionic bonds.
3) How many electrons are involved in a triple covalent bond?
A) two
B) three
C) six
D) nine
Answer: C
Type: MC
Reference: Section 2.1
Bloom's Taxonomy: Remembering
LO: 2-1. Describe how and why atoms interact to form molecules. Sketch examples of how
electron pairs are shared in nonpolar covalent bonds, polar covalent bonds, and ionic bonds. 4) If
1
Copyright © 2019 Pearson Canada, Inc.
mynursytest.store
,DOWNLOAD THE Test Bank
for Biological Science 3rd
Edition Freeman
an atom has a charge of +1, which of the following must be true? A) It has two more protons
than neutrons.
B) It has the same number of protons as electrons.
C) It has one more electron than it has protons.
D) It has one more proton than it has electrons.
Answer: D
Type: MC
Reference: Section 2.1
Bloom's Taxonomy: Comprehension
LO: 2-1. Describe how and why atoms interact to form molecules. Sketch examples of how
electron pairs are shared in nonpolar covalent bonds, polar covalent bonds, and ionic bonds.
5) If an atom has a charge of -2, which of the following must be true? A)
It has two more electrons than protons.
B) It has two more protons than electrons.
C) It has two more protons than neutrons.
D) It has two more neutrons than electrons.
Answer: A
Type: MC
Reference: Section 2.1
Bloom's Taxonomy: Comprehension
LO: 2-1. Describe how and why atoms interact to form molecules. Sketch examples of how
electron pairs are shared in nonpolar covalent bonds, polar covalent bonds, and ionic bonds.
6) If an atom is electrically neutral, which of the following must be true? A)
It has the same number of protons as neutrons.
B) It has the same number of protons as electrons.
C) It has the same number of neutrons as electrons.
D) It has at least one more electron than it has protons.
Answer: B
Type: MC
Reference: Section 2.1
Bloom's Taxonomy: Comprehension
LO: 2-1. Describe how and why atoms interact to form molecules. Sketch examples of how
electron pairs are shared in nonpolar covalent bonds, polar covalent bonds, and ionic bonds. 7)
An atom has six electrons in its valence shell. How many single covalent bonds would you
expect it to form in most circumstances?
A) one
B) two
2
Copyright © 2019 Pearson Canada, Inc.
mynursytest.store
, DOWNLOAD THE Test Bank
for Biological Science 3rd
Edition Freeman
C) three
D) six
Answer: B
Type: MC
Reference: Section 2.1
Bloom's Taxonomy: Comprehension
LO: 2-1. Describe how and why atoms interact to form molecules. Sketch examples of how
electron pairs are shared in nonpolar covalent bonds, polar covalent bonds, and ionic bonds.
8) An atom has four electrons in its valence shell. What types of covalent bonds is it capable of
forming?
A) single, double, or triple
B) single and double only
C) four single bonds only
D) two double bonds only
Answer: A
Type: MC
Reference: Section 2.1
Bloom's Taxonomy: Comprehension
LO: 2-1. Describe how and why atoms interact to form molecules. Sketch examples of how
electron pairs are shared in nonpolar covalent bonds, polar covalent bonds, and ionic bonds.
9) When are atoms most stable?
A) when they have the fewest possible valence electrons
B) when they have the maximum number of unpaired electrons
C) when all of the electron orbitals in the valence shell are filled
D) when all electrons are paired
Answer: C
Type: MC
Reference: Section 2.1
Bloom's Taxonomy: Remembering
LO: 2-1. Describe how and why atoms interact to form molecules. Sketch examples of how
electron pairs are shared in nonpolar covalent bonds, polar covalent bonds, and ionic bonds. 10)
What holds electrons in a covalent bond?
A) It is the fact that two electrons are paired in the same orbital.
B) The electron sharing that occurs makes the atoms involved smaller and more compact.
C) An increase in potential energy, caused by electrical repulsion of the electrons in the bond,
holds the electrons.
3
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mynursytest.store
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