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Covalent and Metallic Bonding Practice

Total questions: 53

Worksheet time: 2hrs 43mins

Name
Class
Date
1.
Outer shell electrons are called
a)
outer electrons
b)
valence electrons
c)
negatives
2.
What two types of atoms make a covalent bond?
a)
2 Nonmetals
b)
1 Nonmetal and 1 Metal
c)
2 Metals
d)
2 Noble Gases
3.
Which of the following is NOT formed by a covalent bond?
a)
K2S
b)
H2O
c)
I2
d)
CO2
4.
What do we call a covalent bond where electrons are shared UNEVENLY or UNEQUALLY?
a)
Ionic
b)
Polar Covalent
c)
Nonpolar Covalent
5.
A Nitrogen molecule (N2) has one triple bond. How many electrons do the nitrogen atoms share?
a)
1
1
b)
3
c)
4
d)
6
6.

According to the Octet Rule, atoms of elements react with each other in order to attain ____ electrons in their outermost energy level or shell.

a)

2

b)

4

c)

6

d)

8

e)

10

7.

How many valence electrons does Oxygen Have?

a)

4 Valence electron

b)

5 Valence electron

c)

6 Valence electron

d)

7 Valence electron

e)

8 Valence electron

8.

Is this the correct Lewis Dot Structure for Boron?

a)

Yes

b)

No, missing electrons

c)

No, too many electrons

d)

No, dots are in wrong place.

9.
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.
10.
A Nitrogen molecule (N2) has one triple bond. How many electrons do the nitrogen atoms share?
a)
1
1
b)
3
c)
4
d)
6
11.
What region of the periodic table contains atoms that form covalent bonds?
a)
the left side
b)
the middle
c)
the right side
d)
top left
12.
What would you name this molecule?
a)
SNa3
b)
H3O
c)
NaCl
d)
H2O
13.
phosphorus trichloride
a)
KCl3
b)
PCl3
c)
K3Cl
d)
P3Cl
14.

SO₃

a)

sulfate

b)

sulfur oxide

c)

sulfur trioxide

d)

monosulfur trioxide

15.

chlorine dioxide

a)

ClO2

b)

ClO

c)

ClO3

d)

HClO2

16.

What are the seven diatomic elements?

a)

H2, Cl2, Br2, O2, N2, I2, F2

b)

H2, Cl2, I2, F2, Hg2, Br2, Fe2

c)

H2, Cu2, Ni2, B2, O2, I2, Fe2

17.

Identify the following compound as ionic or covalent: SO2

a)

ionic

b)

covalent

18.

What is the prefix for 5?

a)

hexa-

b)

hepta-

c)

penta-

d)

mono-

19.

What is the formula for the following molecule: diphosphorus pentoxide

(a)  

20.

The attraction that an atom has for shared electrons in bonds is

a)

electron affinity.

b)

electronegativity.

c)

electropositivity.

d)

electromagnetism.

21.

Excluding the Noble gas family, where on the Periodic Table are the elements with the highest electronegativity located?

a)

upper right

b)

lower right

c)

upper left

d)

lower left

22.

Phosphorus has an electronegativity value of 2.1. Chlorine's electronegativity value is 3.0. What type of bond will these two elements form?

a)

ionic

b)

nonpolar covalent

c)

polar covalent

d)

metallic

23.

How do covalent bonds form?

a)

Donating & receiving valence electrons between atoms

b)

Oppositely charged ions attract each other & form bonds

c)

Scientists are still not sure how they form

d)

Sharing valence electrons between atoms

24.

Chlorine is a diatomic element which means in nature, it is found in two's. (Cl2) Chlorine shares one pair of electrons to make sure each atom complete the octet rule. This creates a...

a)

single bond

b)

double bond

c)

triple bond

25.

Oxygen is a diatomic element which means in nature, it is found in two's. (O2) Oxygen shares two pairs of electrons to make sure each atom completes the octet rule. This creates a...

a)

single bond

b)

double bond

c)

triple bond

26.

Nitrogen is a diatomic element which means in nature, it is found in two's. (N2) Nitrogen shares three pairs of electrons to make sure each atom completes the octet rule. This creates a...

a)

single bond

b)

double bond

c)

triple bond

27.

How many covalent bonds are created in a single water molecule?

a)

0

b)

1

c)

2

d)

3

e)

4

28.

How many covalent bonds are created in a single ammonia molecule?

a)

0

b)

1

c)

2

d)

3

e)

4

29.

When assigning the number of individual atoms in a chemical formula it is written as a...

a)

superscript

b)

subscript

c)

coefficient

d)

script

30.
Ionic or covalent?
Na  Br
a)
Ionic
b)
Covalent
31.
Ionic or covalent?
K  Br
a)
Ionic
b)
Covalent
32.
Ionic or covalent?
C  H
a)
Ionic
b)
Covalent
33.

Why do metallic compounds conduct electricity as solids?

a)

core electrons are mobile, allowing electricity to flow through the metal

b)

valence electrons are mobile, allowing electricity to flow through the metal

c)

protons are mobile, allowing electricity to flow through the metal

d)

the metal cations are mobile, allowing electricity to flow through the metal

34.
I can hit a metal with a hammer without the metal shattering because of its __________.
a)
Ductility
b)
Malleability
c)
Conductivity
d)
Lustrousness
35.
A mixture of two or more metals is called:
a)
mixture
b)
solution
c)
compound
d)
alloy
36.

What do electrons do in a metallic bond?

a)

They stay on the metal atom.

b)

They are transferred from atom to atom.

c)

They form a covalent bond with another atom.

d)

They float around freely.

37.

What is meant by the term "sea of electrons"?

a)

It's what we call all the free floating electrons in a metal.

b)

It's what we call electrons that are floating in a liquid.

c)

It's the total number of electrons in a metal atom.

d)

It's the total number of electrons in the ocean.

38.

What do we call electrons that move freely in a metallic bond?

a)

sea of electrons

b)

lone electrons

c)

unpaired electrons

d)

covalent electrons

39.
phosphorus trichloride
a)
KCl3
b)
PCl3
c)
K3Cl
d)
P3Cl
40.

P₄S₁₀

a)

tetrapotassium decasulfide

b)

phosphorus decasulfide

c)

tetraphosphorus decasulfide

d)

phosphorus (X) sulfide

41.

chlorine dioxide

a)

ClO2

b)

ClO

c)

ClO3

d)

HClO2

42.
The covalent compound N2O5 would be named
a)
nitrogen oxide.
b)
dinitrogen oxide.
c)
nitrogen pentoxide.
d)
dinitrogen pentoxide.
43.

Unlike Ionic compounds, Covalent compounds require what when naming them?

a)

A roman numeral

b)

A charge

c)

A prefix

44.

When is the prefix mono not used?

a)

It is never used when naming covalent compounds

b)

It is never used on the second element

c)

It is never used when on the first element

45.
Each line in a Lewis Structure represents __________ electron(s).
a)
3
b)
2
c)
1
d)
4
46.
Atoms of H only form _________ bonds.
a)
Double
b)
Single
c)
Multiple
d)
Triple
47.
According to the octet rule most elements need _______ valence electrons.
a)
2
b)
8
c)
6
d)
18
48.
Which of the following is the correct Lewis dot structure for the molecule fluorine (F2)?
a)
A
b)
B
c)
C
d)
D
49.
How many electrons can be used in the Lewis Structure for : NO3 -
a)
23
b)
20
c)
18
d)
24
50.

This could be the dot diagram of

a)

Mg

b)

Cl

c)

C

d)

O

51.

How would you draw a Lewis dot diagram for Magnesium?

a)
b)
c)
d)
52.

How many valence electrons are in the compound N2O?

(a)  

53.

Intermolecular forces for: NH3

a)

Dispersion Force

b)

Dipole dipole

c)

Hydrogen bonding

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