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WorksheetsBonding Unit Test Practice
Total questions: 20
Worksheet time: 1hrs 2mins
Name
Class
Date
1.
Which electron-dot structure represents a non-polar molecule?
a)
A
b)
B
c)
C
d)
D
2.
a)
A
b)
B
c)
C
d)
D
3.
A substance that does not conduct electricity as a solid but does conduct electricity when melted is most likely classified as
a)
a nonmetal
b)
an ionic compound
c)
a molecular compound
d)
a metal
4.
What is the correct chemical formula for Calcium Bromide?
a)
CaBr
b)
Ca2Br
c)
CaBr2
d)
Ca2Br2
5.
Given the structure representing a molecule, it can be said that the molecule is...
a)
1) symmetrical and nonpolar
b)
1) symmetrical and polar
c)
1) asymmetrical and nonpolar
d)
1) asymmetrical and polar
6.
At STP, solid carbon can exist as diamond and graphite. Compared to the molecular structure and chemical properties of diamond, graphite has
a)
1) A different molecular structure and different properties
b)
1) A different molecular structure and the same properties
c)
1) The same molecular structure and different properties
d)
1) The same molecular structure and the same properties
7.
1. In a nonpolar covalent bond, electrons are
a)
1) Located in a mobile “sea” shared by many atoms
b)
1) Shared unequally by two atoms
c)
1) Shared equally by two atoms
d)
Transferred from one atom to another
8.
1. The chemical bonding in sodium phosphate, Na3PO4, is classified as
a)
metallic only
b)
Both covalent and metallic
c)
Both covalent and ionic
d)
Ionic only
9.
What is the total number of pairs of electrons shared in the molecule O2 (DRAW IT TO HELP YOU ANSWER)
a)
1
b)
2
c)
3
d)
4
10.
1. Which formula represents a molecular compound?
a)
LiOH
b)
NaI
c)
Kr
d)
N2O4
11.
A solid substance is an excellent conductor of electricity. The chemical bonds in this substance are most likely
a)
1) Ionic, because the valence electrons are shared between atoms
b)
1) Ionic, because the valence electrons are mobile
c)
1) Metallic, because the valence electrons are mobile
d)
1) Metallic, because the valence electrons are stationary
12.
The degree of polarity of a chemical bond in a molecule of a compound can be predicted by determining the difference in the
a)
1) Atomic masses of the bonded atoms in a molecule of the compound
b)
1) Melting points of the elements in the compound
c)
1) Symmetry of the molecule.
d)
1) Electronegativities of the bonded atoms in a molecule of the compound
13.
Which bond is least polar?
a)
N-Cl
b)
Bi-Cl
c)
Se-Cl
d)
As-Cl
14.
What is the name of MnO3?
a)
manganese trioxide
b)
Manganese oxide
c)
Manganese (III) oxide
d)
Manganese (VI) oxide.
15.
What is the correct chemical formula for Lithium chromate?
a)
LiCr
b)
LiCrO4
c)
Li2CrO4
d)
Li2CrO
16.
What is the correct formula for Diphosphorous tetranitride?
a)
P(II)N(III)
b)
P2N3
c)
P2N4
d)
PO4NO3
17.
What is the proper IUPAC name for N3Br6?
a)
Nitrogen Bromide
b)
Trinitrogen hexabromide
c)
Trinitrogen heptabromide
d)
Nitrogen (VI) bromide
18.
Which molecule has a nonpolar covalent bond?
a)
NH3
b)
HCl
c)
H2O
d)
H2
19.
Two fluorine atoms are held together by a covalent bond. Which statement correctly describes this bond
a)
It is polar and forms a nonpolar molecule.
b)
It is nonpolar and forms a nonpolar molecule.
c)
It is nonpolar and forms a polar molecule.
d)
It is polar and forms a polar molecule.
20.
1. Which elements will form an ionic compound?
a)
Na and Al
b)
Li and S
c)
Ca and Hg
d)
H and I
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