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Unit 5 Chemical Bonding Exam

Total questions: 25

Worksheet time: 38mins

Name
Class
Date
1.

Metallic bonding gives metals all of the following characteristics, EXCEPT:

a)

Malleability

b)

Ductility

c)

Low melting point

d)

High Conductivity

2.

Which type of bonding has the lowest melting point?

a)

Ionic

b)

Covalent

c)

Metallic

3.

Which of the following is an ionic compound?

a)

CsO

b)

H2O

c)

O2

d)

NH3

4.
An ionic bond forms when atoms ___________ electrons.
a)
gain
b)
share
c)
increase
d)
transfer
5.

What is the ionic formula for a bond between Calcium and Phosphorus?

a)

Ca2P3

b)

Ca3P2

c)

Ca2P5

d)

P5Ca2

6.

What is the chemical formula for Lithium Nitride?

a)

Li3N

b)

LiN3

c)

NLi3

d)

N3Li

7.
What is the name of the compound NO?
a)
nitrogen dioxide
b)
nitrogen monoxide
c)
dinitrogen trioxide
8.
The name of FeCl₂ is
a)
iron chloride
b)
iron (II) chloride
c)
iron (I) chloride
d)
iron dichloride
9.
The chemical formula of potassium iodide is
a)
KI
b)
PI
c)
KI₂
d)
K₂I
10.
What is the formula for aluminum fluoride?
a)
AlF
b)
Al2F3
c)
AlF3
d)
Al3F2
11.
When naming ionic compounds with transition metals you need to include roman numerals to show the _____ of the metal..
a)
atomic number
b)
mass number
c)
charge
d)
ionization energy
12.
Why do bonds form?
a)
To fill the valence shell of electrons for the elements involved
b)
to release energy stored in the bonds
c)
because whenever you mix two chemicals, there will be a reaction
d)
because of attraction
13.
A substance which has a high melting point, conducts electricity when dissolved in water, and has a crystalline structure probably has what type of bond?
a)
Ionic
b)
Metallic
c)
Covalent
d)
Crystalline
14.
A solid substance is an excellent conductor of electricity. The chemical bonds in this substance are most likely?
a)
ionic, because the valence electrons are shared between atoms
b)
covalent, because the valence electrons are mobile
c)
metallic, because the valence electrons are stationary
d)
metallic, because the valence electrons are mobile
15.

Which compound would have a very low melting point?

a)

sodium chloride

b)

copper (II) sulfate

c)

sulfur dioxide

d)

aluminum

16.

Which solid would be a good conductor?

a)

sodium chloride

b)

copper (II) sulfate

c)

glucose

d)

aluminum

17.
Which of the following gives the correct chemical formula for the compound Magnesium Phosphide?
a)
Mg2P3
b)
MgP
c)
Mg3P2
d)
MgP2
18.
Which of the following gives the correct chemical formula for the compound Dinitrogen Monoxide?
a)
NO
b)
N2O
c)
N2O2
d)
O2N2
19.
What is the correct chemical name for the ionic compound:  Na2O
a)
Sodium oxide
b)
Sodium (II) oxide
c)
Disodium monoxide
d)
Disodium oxide
20.
What is the correct chemical name for the molecular compound:  CS2
a)
Carbon Sulfide
b)
Carbon diSulfide
c)
diCarbide diSulfide
d)
Carbon (II) Sulfide
21.
What is the correct chemical name for the molecular compound:  SF4
a)
Sulfur Fluoride
b)
Sulfur TetraFluoride
c)
TetraSulfide Fluoride
d)
Sulfur (IV) Fluoride
22.

Which combination of the characteristics of element X, a metal, and element Y, a nonmetal, is most likely to lead to ionic bonding?

a)

X = low ionization energy; Y = high electronegativity value

b)

X = low ionization energy; Y = low electronegativity value

c)

X= high ionization energy; Y = high electronegativity value

d)

X = high ionization energy; Y = low electronegativity value

23.

How many dots would you put around carbon, a group 14 element?

a)

4

b)

6

c)

8

d)

18

24.
This could be the dot diagram of
a)
Mg
b)
Cl
c)
C
d)
O
25.
Refer to the image. Which diagrams correctly represent the transfer of electrons in ionic bonding?
a)
Diagram 3 and 4
b)
Diagram 1 and 2
c)
Diagram 1 and 4
d)
Diagram 2 and 3

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