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WorksheetsADV Chemistry Chapter 7 Exam
Total questions: 23
Worksheet time: 12mins
Name
Class
Date
1.
A covalent bond forms when atoms
a)
A. transfer electrons
b)
B. share electrons
c)
C. lose protons
d)
D. gain neutrons
2.
Covalent bonds most commonly form between
a)
A. two metals
b)
B. a metal and a nonmetal
c)
C. two nonmetals
d)
D. noble gases only
3.
Which type of bond shares one pair of electrons?
a)
A. Ionic
b)
B. Double covalent
c)
C. Triple covalent
d)
D. Single covalent
4.
A double bond contains
a)
A. one sigma bond
b)
B. one pi bond
c)
C. one sigma and one pi bond
d)
D. two sigma bonds
5.
Which molecule contains a triple bond?
a)
A. O₂
b)
B. CO₂
c)
C. N₂
d)
D. H₂O
6.
In a Lewis structure, unshared electrons are called
a)
A. bonding pairs
b)
B. valence shells
c)
C. lone pairs
d)
D. dipoles
7.
The VSEPR model states that molecular shape is determined by
a)
A. atomic mass
b)
B. electron repulsion
c)
C. bond energy
d)
D. electronegativity only
8.
Which shape results from two bonding pairs and two lone pairs?
a)
A. Linear
b)
B. Trigonal planar
c)
C. Tetrahedral
d)
D. Bent
9.
Which molecule is linear?
a)
A. H₂O
b)
B. NH₃
c)
C. CO₂
d)
D. CH₄
10.
Which shape is associated with four bonding pairs and no lone pairs?
a)
A. Bent
b)
B. Trigonal pyramidal
c)
C. Linear
d)
D. Tetrahedral
11.
Electronegativity is a measure of an atom’s ability to
a)
A. lose electrons
b)
B. gain neutrons
c)
C. attract electrons
d)
D. repel protons
12.
A bond is considered ionic when the electronegativity difference is
a)
A. less than 0.4
b)
B. between 0.4 and 1.7
c)
C. greater than 1.7
d)
D. exactly zero
13.
A polar covalent bond results from
a)
A. equal sharing of electrons
b)
B. unequal sharing of electrons
c)
C. complete transfer of electrons
d)
D. resonance structures
14.
Which molecule is nonpolar due to symmetry?
a)
A. H₂O
b)
B. NH₃
c)
C. CCl₄
d)
D. SO₂
15.
Molecular substances generally have lower melting points because they have
a)
A. strong ionic bonds
b)
B. weak intermolecular forces
c)
C. strong covalent networks
d)
D. high electronegativity
16.
Acids that contain oxygen are called (a) acids.
17.
Write the molecular name for CO₂:
(a)
18.
Write the molecular formula for dinitrogen tetroxide: (a)
19.
The suffix -ate in an oxyanion becomes - (a) in an acid name.
20.
A molecule with polar bonds but symmetrical shape is (a) .
21.
A triple covalent bond shares (a) pairs of electrons.
22.
A molecule with a trigonal planar shape has bond angles of (a) degrees.
23.
A molecule with a linear shape has a bond angle of (a) degrees.
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