1. (Chapter 2) Which four of the 92 naturally occurring elements make up
approximately 96% of the mass of the human body?
A. carbon, sodium, hydrogen, nitrogen
B. carbon, oxygen, phosphorus, hydrogen
C. oxygen, hydrogen, calcium, nitrogen
D. carbon, hydrogen, nitrogen, oxygen: D. carbon, hydrogen, nitrogen, oxygen
2. (Chapter 2) The chemical behavior of an atom depends primarily upon which
of the following?
A. the number of neutrons in the nucleus
B. the number of protons in the nucleus
C. the number of electrons in the valence shell
D. the total number of electrons contained by the atom: C. The number of
electrons in the valence shell
3. (Chapter 2) The atomic number of sulfur is 16, which indicates that a sulfur
atom contains .
A. 16 neutrons
B. 16 protons
C. 16 protons and 16 neutrons
D. 8 electrons in its outermost electron shell.: B. 16 protons
4. (Chapter 2) A covalent chemical bond is one in which
A. electrons are removed from one atom and transferred to another atom so
that the two atoms become oppositely charged
B. protons and neutrons are shared by two atoms so as to satisfy the require-
ments of both atoms
C. outer-shell electrons of two atoms are shared so as to occupy the outer
electron shells of both atoms
D. outer-shell electrons of one atom are transferred to fill the inner electron
shell of another atom: C. outer-shell electrons of. two atoms are shared so as to
occupy the outer electron shells of both atoms
5. (Chapter 2) When two atoms are equally electronegative, they will interact
,to form .
A. hydrogen bonds
B. van der Waals interactions
,C. polar covalent bonds
D. nonpolar covalent bonds: D. nonpolar covalent bonds
6. (Chapter 2) Unequal sharing of electrons between atoms will result in which
of the following interactions?
A. a nonpolar covalent bond
B. a polar covalent bond
C. an ionic bond
D. a hydrophobic interaction: B. a polar covalent bond
7. (Chapter 2) An ionic bond is formed by
A. sharing of a pair of electrons between two atoms
B. sharing of a single electron between two atoms
C. sharing of a pair of protons between two atoms
D. transfer of an electron from one atom to another: D. transfer of an electron
from one atom to another
8. (Chapter 2) In an aqueous solution, water molecules associate with one
another through which of the following?
A. hydrogen bonds
B. ionic bonds
C. polar covalent bonds
D. covalent bonds: A. hydrogen bonds
9. (Chapter 2) Hydrophobic substances such as vegetable oil are
.
A. nonpolar substances that repel water molecules
B. nonpolar substances that have an attraction for water molecules
C. polar substances that repel water molecules
D. polar substances that have an affinity for water: A. nonpolar substance that
have an attraction for water molecules
10. (Chapter 2) The attraction between the slight negative charge of one water
molecule to the slight positive charge of another water molecule results in
which of the following interactions?
A. a covalent bond
B. a hydrogen bond
C. an ionic bond
D. a hydrophilic bond: B. a hydrogen bond
, 11. (Chapter 2 study module) The tendency of water molecules to stay close
to each other as a result of hydrogen bonding .
A. All of the listed responses are correct.
B. provides the surface tension that allows leaves to float on water
C. is called cohesion
D. keeps water moving through the vessels in a tree trunk
E. acts to moderate temperature: A. All of the listed responses are correct.
12. (Chapter 2 study modules) Isotopes of an element will always differ in
.
A. atomic mass
B. atomic number
C. number of electrons
D. number of protons
E. symbol: A. atomic mass
13. (Chapter 2 study module) Ionic bonds form as a result of
.
A. attraction between ions that have opposite charges
B. attraction between hydrogen and other atoms that share electrons unequal-
ly
C. sharing of electron pairs between atoms
D. unequal sharing of electrons between atoms
E. chance accumulations of electrons as they move around atomic nuclei: A.
attraction between ions that have opposite charges
14. (Chapter 2 study module) Cells are surrounded by water, and cells
themselves consist of about 70 to 95 percent water. As a result,
.
A. all of the listed responses are correct
B. the temperature of living things tends to change relatively slowly
C. a variety of nutrient molecules is readily available as dissolved solutes
D. waste products produced by cell metabolism can be easily removed
E. dissolved substances can be easily transported within a cell or between
cells in multicellular organisms: A. all of the listed responses are correct
15. (Chapter 2 study module) An atom that normally has
in its outer shell would not form chemical bonds
with other atoms.
approximately 96% of the mass of the human body?
A. carbon, sodium, hydrogen, nitrogen
B. carbon, oxygen, phosphorus, hydrogen
C. oxygen, hydrogen, calcium, nitrogen
D. carbon, hydrogen, nitrogen, oxygen: D. carbon, hydrogen, nitrogen, oxygen
2. (Chapter 2) The chemical behavior of an atom depends primarily upon which
of the following?
A. the number of neutrons in the nucleus
B. the number of protons in the nucleus
C. the number of electrons in the valence shell
D. the total number of electrons contained by the atom: C. The number of
electrons in the valence shell
3. (Chapter 2) The atomic number of sulfur is 16, which indicates that a sulfur
atom contains .
A. 16 neutrons
B. 16 protons
C. 16 protons and 16 neutrons
D. 8 electrons in its outermost electron shell.: B. 16 protons
4. (Chapter 2) A covalent chemical bond is one in which
A. electrons are removed from one atom and transferred to another atom so
that the two atoms become oppositely charged
B. protons and neutrons are shared by two atoms so as to satisfy the require-
ments of both atoms
C. outer-shell electrons of two atoms are shared so as to occupy the outer
electron shells of both atoms
D. outer-shell electrons of one atom are transferred to fill the inner electron
shell of another atom: C. outer-shell electrons of. two atoms are shared so as to
occupy the outer electron shells of both atoms
5. (Chapter 2) When two atoms are equally electronegative, they will interact
,to form .
A. hydrogen bonds
B. van der Waals interactions
,C. polar covalent bonds
D. nonpolar covalent bonds: D. nonpolar covalent bonds
6. (Chapter 2) Unequal sharing of electrons between atoms will result in which
of the following interactions?
A. a nonpolar covalent bond
B. a polar covalent bond
C. an ionic bond
D. a hydrophobic interaction: B. a polar covalent bond
7. (Chapter 2) An ionic bond is formed by
A. sharing of a pair of electrons between two atoms
B. sharing of a single electron between two atoms
C. sharing of a pair of protons between two atoms
D. transfer of an electron from one atom to another: D. transfer of an electron
from one atom to another
8. (Chapter 2) In an aqueous solution, water molecules associate with one
another through which of the following?
A. hydrogen bonds
B. ionic bonds
C. polar covalent bonds
D. covalent bonds: A. hydrogen bonds
9. (Chapter 2) Hydrophobic substances such as vegetable oil are
.
A. nonpolar substances that repel water molecules
B. nonpolar substances that have an attraction for water molecules
C. polar substances that repel water molecules
D. polar substances that have an affinity for water: A. nonpolar substance that
have an attraction for water molecules
10. (Chapter 2) The attraction between the slight negative charge of one water
molecule to the slight positive charge of another water molecule results in
which of the following interactions?
A. a covalent bond
B. a hydrogen bond
C. an ionic bond
D. a hydrophilic bond: B. a hydrogen bond
, 11. (Chapter 2 study module) The tendency of water molecules to stay close
to each other as a result of hydrogen bonding .
A. All of the listed responses are correct.
B. provides the surface tension that allows leaves to float on water
C. is called cohesion
D. keeps water moving through the vessels in a tree trunk
E. acts to moderate temperature: A. All of the listed responses are correct.
12. (Chapter 2 study modules) Isotopes of an element will always differ in
.
A. atomic mass
B. atomic number
C. number of electrons
D. number of protons
E. symbol: A. atomic mass
13. (Chapter 2 study module) Ionic bonds form as a result of
.
A. attraction between ions that have opposite charges
B. attraction between hydrogen and other atoms that share electrons unequal-
ly
C. sharing of electron pairs between atoms
D. unequal sharing of electrons between atoms
E. chance accumulations of electrons as they move around atomic nuclei: A.
attraction between ions that have opposite charges
14. (Chapter 2 study module) Cells are surrounded by water, and cells
themselves consist of about 70 to 95 percent water. As a result,
.
A. all of the listed responses are correct
B. the temperature of living things tends to change relatively slowly
C. a variety of nutrient molecules is readily available as dissolved solutes
D. waste products produced by cell metabolism can be easily removed
E. dissolved substances can be easily transported within a cell or between
cells in multicellular organisms: A. all of the listed responses are correct
15. (Chapter 2 study module) An atom that normally has
in its outer shell would not form chemical bonds
with other atoms.
