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Covalent Quiz

Total questions: 60

Worksheet time: 3hrs 27mins

Name
Class
Date
1.

What makes an atom "happy"?

a)

Forming a bond

b)

Giving or taking electrons

c)

Sharing electrons

d)

Having a complete outer shell

2.

How do covalent bonds help atoms achieve a full outer shell?

a)

Electrons are transferred between atoms until both have full outer shells

b)

The atoms share electrons in order to get a full outer shell

c)

Covalent bonding turns the atoms into ions

d)

It helps the electrons jump to higher energy levels

3.

What kind of bond is shown in the picture?

a)

A single covalent bond

b)

A double covalent bond

c)

A triple covalent bond

d)

An ionic bond

4.

How many electrons are shared in the bond above?

a)

1

b)

2

c)

3

d)

4

5.

What kind of bond is shown in the picture?

a)

A single covalent bond

b)

A double covalent bond

c)

A triple covalent bond

d)

An ionic bond

6.

How many electrons are shared in the bond above?

a)

1

b)

2

c)

3

d)

4

7.

What classes of elements can participate in a covalent bond? Check all that apply

a)

Metals

b)

Nonmetals

c)

Metalloids

d)

Noble gases

8.

Other than Hydrogen, how many electrons do atoms need in order to have a full outer shell?

a)

2

b)

4

c)

6

d)

8

9.

Which of the following is the proper Lewis Structure for Carbon Tetrahydride?

a)

A

b)

B

c)

C

d)

D

10.

What is it called if there are three-pairs of electrons being shared?

a)

Triple Bond

b)

Three Single Bonds

c)

Tribond

d)

Double and Single Bond Combo

11.
According to the octet rule most elements need _______ valence electrons.
a)
2
b)
8
c)
6
d)
18
12.

Is this correct way to draw the Lewis Dot Structure for Carbon?

a)

Yes

b)

No, too many electrons

c)

No, not enough electrons

d)

No, dots are in wrong places

13.

USE THE PERIODIC TABLE

How many valence electrons does Phosphorus have?

a)

31

b)

5

c)

15

d)

4

14.

Atomic number tells us the number of

a)

protons

b)

neutrons

c)

protons & neutrons

15.

Based on VALENCE ELECTRONS, this could represent the outer ring of:

a)

Mg

b)

Cl

c)

C

d)

O

16.

The halogens have

a)

1 valence electron

b)

2 valence electrons

c)

7 valence electrons

d)

8 valence electrons

17.

Electrons on the outermost shell that are involved in bonding and reactions are known as:

a)

Ground state electrons

b)

Electromagnetic electrons

c)

Valence electrons

18.

This type of bond happens when electrons are shared EQUALLY between the two bonded atoms.

a)

Polar covalent

b)

Nonpolar covalent

c)

Ionic

19.
Which of the following is the correct Lewis dot structure for the molecule fluorine (F2)?
a)
A
b)
B
c)
C
d)
D
20.

This is the displayed formula for what covalent compound?

a)

Water

b)

Hydrogen peroxide

c)

Hydrogen oxide

d)

Ethanol

21.

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

22.

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

23.

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

24.

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

a)

0

b)

1

c)

2

d)

3

e)

4

25.

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

a)

0

b)

1

c)

2

d)

3

e)

4

26.

How many pairs of valence electrons are being shared in a single water molecule?

a)

0 pair - 0 valence electrons

b)

1 pair - 2 valence electrons

c)

2 pair - 4 valence electrons

d)

3 pair - 6 valence electrons

27.

How many pairs of valence electrons are being shared in a single ammonia molecule?

a)

0 pair - 0 valence electrons

b)

1 pair - 2 valence electrons

c)

2 pair - 4 valence electrons

d)

3 pair - 6 valence electrons

28.

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

a)

superscript

b)

subscript

c)

coefficient

d)

script

29.

How many total atoms are in the ionic compound Ca(NO3)2 (Calcium nitrate)?

a)

3

b)

5

c)

6

d)

9

e)

10

30.

How many total atoms are in the covalent compound C4H10 (Butane)?

a)

6

b)

8

c)

10

d)

12

e)

14

31.
Which of the following is NOT formed by a covalent bond?
a)
K2S
b)
H2O
c)
I2
d)
CO2
32.
Ionic or covalent?
NaBr
a)
Ionic
b)
Covalent
33.
Ionic or covalent?
H2O
a)
Ionic
b)
Covalent
34.
What molecule could this be? 
a)
BF3
b)
CH4
c)
H2O
d)
CO2
35.
What molecule could this be? 
a)
H2O
b)
CCl4
c)
PCl5
d)
NaCl
36.
Who could this molecule be?
a)
CH4
b)
CO2
c)
PCl5
d)
BF3
37.

Single bonds are formed when ____ pair(s) of valence electrons are shared.

a)

one

b)

three

c)

two

d)

four

38.

Anions

a)

Gain electrons, has an overall positive charge

b)

Lose electrons, has an overall positive charge

c)

Lose electrons, has an overall negative charge

d)

Gain electrons, has an overall negative charge

39.

Which of the following is NOT an ionic compound:

a)

NaCl

b)

Cl2

c)

CaF2

d)

KOH

40.
A vertical column is called...
a)
group
b)
tower
c)
period
d)
crew
41.

Which element is in period 1 group 18?

a)

Helium

b)

Hydrogen

c)

Neon

d)

Lead

42.

Which element is in period 4 family 11

a)

Mercuy

b)

Copper

c)

Silver

d)

Gold

43.

Match the following elements with the correct number of valence electrons.

a)

Ar

1.

8

b)

I

2.

7

c)

O

3.

6

d)

N

4.

5

e)

Si

5.

4

44.
How many Valance electrons does Iodine Have?
a)
6
b)
16
c)
7
d)
17
45.
What molecule is this?
a)
CO
b)
CO2
c)
C2O
d)
C2O2
46.
What is the correct formula for this molecule?
a)
NH
b)
N3H
c)
NH3
d)
NH4
47.
Magnesium (Mg) and Oxygen (O) form an ________ bond.
a)
Ionic
b)
Covalent
c)
Metallic
d)
Nothing
48.

The chemical bond between a non-metal and another non-metal will be a ________ bond.

a)

metal

b)

ionic

c)

covalent

d)

polar

49.

Which is the correct molecular structure for carbon dioxide CO2?

a)
b)
c)
d)
50.
Which of the following is the correct Lewis structure for the compound PBr3?
a)
structure A
b)
structure B
c)
structure C
d)
structure D
51.
Which is the correct structure for ammonia?
Pictures correspond with a-d.
a)
Option A.
b)
Option B. 
c)
Option C.
d)
Option D. 
52.
Which of these is covalent?
a)
NaCl
b)
Pb(NO3)2
c)
CO2
d)
AlCl3
53.
Name the compound S2F8
a)
sulfur (II) fluoride
b)
disulfur octafluoride
c)
sulfur fluorine
d)
sulfur octafluoride
54.
Name: PI3
a)
phosphorous (III) iodide
b)
monophosphorous iodide
c)
phosphorous triiodide
d)
phosphide
55.

Name for PBr2

a)

phosphorus bromide

b)

phosphorus dibromide

c)

phosphorus dibromine

d)

phosphorus bromine

56.

Name for CO

a)

carbon monoxide

b)

carbon oxide

c)

monocarbon oxide

d)

carbide monoxide

57.
What is the name of N2O3
a)
Nitrogen trioxide
b)
Dinitrogen oxide
c)
Dinitrogen trioxide
d)
Nitrogen oxide
58.
What is the chemical formula for Tetrasulfur pentoxide?
a)
SO
b)
S4O
c)
S4O5
d)
S5O4
59.
What is the name of C3Cl8 ?
a)
Carbon octachloride
b)
Tricarbon octachloride
c)
Carbon trichloride
d)
Octacarbon trichloride
60.
Covalent bonds are between...
a)
two or more nonmetals
b)
sodium and chlorine
c)
metals and metals
d)
metals and nonmetals

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