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5 Honors: Bonding Unit Exam Review

Total questions: 85

Worksheet time: 1hrs 23mins

Name
Class
Date
1.
Which type of bond has an equal sharing of electrons?
a)
Polar Covalent 
b)
Non Polar Covalent
c)
Ionic
d)
Metallic
2.
An ionic bond forms when atoms ___________ electrons.
a)
gain
b)
share
c)
increase
d)
transfer
3.
Which type of bond has an unequal sharing of electrons?
a)
Polar Covalent 
b)
Non Polar Covalent
c)
Ionic
d)
Metallic
4.
Chemical bonds form when atoms
a)
combined nuclei
b)
give up neutrons
c)
gain protons
d)
share or transfer electrons
5.
Bonds that form between two metals are called ______________ bonds.
a)
ionic 
b)
covalent
c)
metallic
d)
pervasive
6.
Covalent compounds
a)
Share electrons
b)
transfer electrons
c)
contain a sea of electrons
d)
conduct electricity
7.
Which type of bond creates a "pool" of electrons between atoms?
a)
Ionic Bonds
b)
Covalent Bonds
c)
Metallic Bonds
d)
Saving Bonds
8.
Which of the following is a characteristic property of ionic compounds?
a)
They form hard, brittle crystals with characteristic shapes
b)
They have low melting points
c)
They have low boiling points
d)
They contain no charged particles
9.
What is the chemical name for the compound with the formula Na₂S?
a)
sodium sulfide
b)
sodium fluoride
c)
magnesium sulfide
d)
lithium oxide
10.
The bonds in Na2O are best described as 
a)
a.  covalent, because valence electrons are shared.
b)
covalent, because valence electrons are transferred
c)
ionic, because valance electrons are shared.
d)
ionic, because valance electrons are transferred. 
11.
Atoms gain or lose electrons to become stable by satisfying this rule.
a)
Lewis Structure rule
b)
Periodic Law
c)
octet rule
d)
Ionic Law
12.
Which is the correct lewis dot structure for calcium chloride?
a)
A
b)
B
c)
C
13.
According to the diagram below, how many bonds will this atom need to make to be stable?
a)
1
b)
2
c)
3
d)
4
14.
Name this compound:   MgS
a)
Sulfur Magnesium
b)
Magnesium Sulfate
c)
Magnesium Sulfur
d)
Magnesium Sulfide
15.
Is Hydrogen considered a metal or a non-metal?
a)
Metal
b)
Non-metal
16.
Are the atoms more stable when they are bonded together or when they are apart? 
a)
Bonded Together
b)
Apart
17.

How many electrons are involved in a double bond?

a)

One pair of electrons

b)

Two pairs of electrons

c)

6 electrons

d)

8 electrons

18.

Which of these is not a covalent molecule?

a)

MgO

b)

CO2

c)

HCl

d)

CH4

19.

Why is this diagram of bonding in carbon dioxide (CO2) incorrect?

a)

There should be 2 carbon atoms and one oxygen

b)

2 more electrons should be added to the carbon atom

c)

there should be a double bond not a single bond

d)

2 more electrons should be added to the oxygen atoms

20.
What type of bond is illustrated above?
a)
Metallic
b)
Ionic
c)
Covalent
d)
Wiggly
21.
The reason for the properties displayed by metals is they have________
a)
a sea of electrons (mobile valence electrons
b)
very weak intermolecular forces
c)
strong ionic bonds
d)
their valence electrons are frozen in place
22.
Of these 3 molecules, which has polar covalent bonding?
a)
O2
b)
NaI2
c)
HBr
d)
MgO
23.
Which of these molecules has nonpolar covalent bonding?
a)
H2O
b)
HCl
c)
I2
d)
NaCl
24.
Which of these molecules is polar?
a)
H2O
b)
BBr3
c)
I2
d)
MgI2
25.
In the HCl molecule which atom would have a slightly negative charge?
a)
H
b)
Both
c)
Cl
d)
Neither
26.
Which of these represents a molecule?
a)
NaCl
b)
MgBr2
c)
CaO
d)
NH3
27.
The following all contain polar bonds, which one is a polar molecule?
a)
CBr4
b)
PCl3
c)
BCl3
d)
BeCl2
28.

What is the correct formula for Sodium Chloride?

a)

SCl

b)

NaCl

c)

SC

d)

NaCl2

29.

Name this ionic compound: Al2O3

a)

Dialuminum oxide

b)

Aluminum oxygen

c)

Oxygen Aluminide

d)

Aluminum oxide

30.

Write the chemical formula for K and Br (potassium bromide).

a)

KBr

b)

K2Br

c)

KBr3

d)

KBr2

31.

Write the chemical formula for Na and S (sodium sulfide).

a)

NaS

b)

S2S2

c)

Na2S

d)

NaS2

32.

Using the model for the formation of Scandium Fluoride (an ionic compound), write the chemical formula.

a)

Sc3F

b)

Sc3F3

c)

Sc+3F-1

d)

ScF3

33.

Magnesium Hydroxide is an ionic compound made up from Mg2+ and OH- ions. Which is its correct formula?

a)

MgOH

b)

MgOH2

c)

Mg(OH)2

d)

MgO

34.

What is the correct formula for aluminum hydroxide?

a)

AlOH

b)

Al2(OH)3

c)

Al3(OH)2

d)

Al(OH)3

e)

Al(OH)2

35.

Classify the following molecule.

a)

polar

b)

nonpolar

36.

Why is the molecule nonpolar?

a)

There are nonbonding pairs on the central atom.

b)

There are different types of elements bonded to the central atom.

c)

There are no nonbonding pairs on the central atom and all of the atoms bonded to the central atom are the same.

37.

Classify the following molecule.

a)

polar

b)

nonpolar

38.

Why is the molecule polar?

a)

There are nonbonding pairs on the central atom.

b)

There are different types of elements bonded to the central atom.

c)

There are no nonbonding pairs on the central atom and all of the atoms bonded to the central atom are the same.

39.

Why is the molecule polar?

a)

There is a nonbonding pair on the central atom.

b)

There are different types of elements bonded to the central atom.

c)

There are no nonbonding pairs on the central atom and all of the atoms bonded to the central atom are the same.

40.

Why is the molecule polar?

a)

There are nonbonding pairs on the central atom.

b)

There are different types of elements bonded to the central atom.

c)

There are no nonbonding pairs on the central atom and all of the atoms bonded to the central atom are the same.

41.

Why is the molecule nonpolar?

a)

There are nonbonding pairs on the central atom.

b)

There are different types of elements bonded to the central atom.

c)

There are no nonbonding pairs on the central atom and all of the atoms bonded to the central atom are the same.

42.
How do covalent bonds form?
a)
Donating & receiving valence e- between atoms.
b)
Opposite slight charges attract each other between compounds.
c)
Scientists are still not sure how they form.
d)
Sharing valence e- between atoms.
43.

Polarity of a molecule is determined by

a)

shape and charge

b)

symmetry/asymmetry of molecule and difference in EN value

c)

difference in EN value and size

d)

difference in EN value and charges

44.

CO2 has polar bonds but is a NON POLAR molecule. Why?

a)

it has an asymmetrical shape

b)

the molecule is symmetrical with no lone pairs of electrons on the central atom, so it is linear, not bent

c)

there is net dipole moment between C and O atoms in molecule

d)

bond polarity does not exist between C+ and O- atoms

45.

Does the following reference Polar, Nonpolar, or both:

"electronegativity values are the same"?

a)

Polar

b)

Nonpolar

c)

Both

46.
Calculate the Formal Charge for the Oxygen Labeled 1 
a)
-1
b)
+1
c)
0
d)
-2
47.
Calculate the Formal Charge for the Nitrogen
a)
-1
b)
+1
c)
0
d)
-2
48.
What is the formal charge for Selenium
a)
+1
b)
-1
c)
0
d)
-2
49.
How many sigma bonds does this have? 
a)
1
b)
2
c)
3
d)
4
50.
How many pi bonds does this have? 
a)
1
b)
2
c)
3
d)
4
51.
How many pi bonds are there in a single bond? 
a)
0
b)
1
c)
2
d)
3
52.

Including the drawn structure, how many total resonance structures for NO3- ion can be drawn?

a)

1

b)

2

c)

3

d)

4

53.

Considering formal charge as well as the octet rule, what is the best electron dot structure for the polyatomic ion NCO-? (Note: three of these structures are correct but one is "best")

a)

1

b)

2

c)

3

d)

4

e)

5

54.

What is the hybridization of a linear molecule?

a)

sp

b)

sp2

c)

sp3

d)

sp3d

55.

Which of the following images represents a Trigonal Planar molecular geometry?

a)
b)
c)
d)
56.

What is the hybridization of this molecule shown

a)

sp

b)

sp2

c)

sp3

d)

sp4

57.

What is the hybridization of the central atom of a bent molecule? (AB2E2) (AB2 represents bonding electrons on the central atom, E2 represents the number of nonbonding electron pairs, so 2 electron pairs)

a)

sp

b)

sp2

c)

sp3

d)

sp3d

58.

Determine the hybridization of the given structure.

a)

sp

b)

sp2

c)

sp3

d)

sp3d

59.

Carbon atom hybridization is

a)
sp hybridization
b)
sp2 hybridization
c)
sp3 hybridization
d)
dsp3 hybridization
60.

How many pi bonds are in the following compound?

a)

0

b)

1

c)

2

d)

3

e)

5

61.

How many sigma bonds are in the following molecule?

a)

0

b)

1

c)

2

d)

3

e)

5

62.

List the strongest to weakest IMFs.

a)

Hydrogen Bond, London Dispersion, Dipole-dipole

b)

London Dispersion, Dipole-dipole,

Hydrogen Bond

c)

Hydrogen Bond, Dipole-dipole, London Dispersion

d)

Dipole-dipole, Hydrogen Bond, London Dispersion

63.

A strong IMF increases

a)

boiling point

b)

solubility

c)

flammability

d)

malleability

64.

A weak IMF will result in a

a)

high melting point

b)

high viscosity

c)

high surface tension

d)

low surface tension

65.

A hydrogen bond is a covalent bond. True or False

a)

True

b)

False, because it is ionic

c)

False, because it involves the transfer of electrons

d)

False, it is an intermolecular force

66.

Predict the substance with the highest melting point (based on IMF)

a)

CO2

b)

AlCl3

c)

C2H6

d)

CH3OH

67.

Predict the IMF

a)

London Dispersion

b)

Dipole-dipole

c)

Hydrogen Bond

68.

Predict the IMF

a)

London Dispersion

b)

Dipole-dipole

c)

Hydrogen Bond

69.

What is the molecular geometry of BF3?

a)

bent

b)

trigonal planar

c)

tetrahedral

d)

trigonal pyramidal

70.

Which of the following applies to IF41+

a)

incomplete octet

b)

follows the octet rules

c)

free radical

d)

expanded octet

71.

What is the picture showing?

a)

All of the resonance structures for carbonate.

b)

The formal charge on each atom in carbonate.

c)

The electronegativity for carbonate.

d)

The ionization energy for carbonate.

72.

What is the formal charge on the phosphorus atom in this Lewis dot structure?

a)

0

b)

-1

c)

+1

d)

-3

73.

What is the molecular geometry of PCl5

a)

trigonal bipyramidal

b)

seesaw

c)

square pyramidal

d)

square planar

74.

What is the hybridization on the carbon atom in CO2?

a)

sp

b)

sp2

c)

sp3

d)

sp3d

e)

sp3d2

75.

How many sigma bonds are in a single, double, and triple bond respectfully?

a)

1, 2, 3

b)

0, 1, 2

c)

1, 1, 2

d)

1, 1, 1

76.

The Lewis structure of the CO32- ion is

a)
b)
c)
d)
e)
77.

The ion NO- has _____ valence electrons.

a)

10

b)

12

c)

14

d)

15

e)

16

78.

In the Lewis structure of ClF, the formal charge on Cl is _______ and the formal charge on F is _______.

a)

0,0

b)

-1, -1

c)

0, -1

d)

-1, 0

e)

+1, -1

79.

In HCN (Carbon is usually the central atom) what kind of bond is between the C and N

a)

Single

b)

Double

c)

Triple

80.

What is the formula for formal charge?

a)

Valence electrons minus bonds and nonbonding electrons

b)

It is based off of the group on the periodic table

c)

It is the number of electrons on the atom - electrons on other atoms

81.

Which of the following elements can have an expanded octet?

a)

P

b)

N

c)

B

d)

F

82.

Which of the following elements can have an incomplete octet?

a)

B

b)

P

c)

N

d)

O

83.

How many bonds can hydrogen make?

a)

Only 1

b)

1 or 2 Bonds

c)

1 bond with 6 electrons on it

d)

It never makes bonds

84.

What does the acronym BARF stand for

a)

Bend Absorb Release Formal

b)

Bond Azimuthal Rebond Frigid

c)

Break Absorb Release Form

d)

Break Release Absorb Form

85.

SNAP

a)

Sp bonds Never break Always Prevail

b)

System Nonzero Atypical Person

c)

Snap, No Advanced People (here)

d)

Symmetrical Nonpolar Asymmetrical Polar