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Covalent Bonding Test Review

Total questions: 45

Worksheet time: 2hrs 51mins

Name
Class
Date
1.

Which of the following is the correct formula for phosphorus trichloride?

a)

KCl3

b)

PCl3

c)

K3Cl

d)

P3Cl

2.

Which of the following is the correct formula for silicon dioxide?

a)

SO2

b)

NaO2

c)

SiO2

d)

SiO

3.

Which of the following is the correct formula for dinitrogen pentoxide?

a)

N2O5

b)

NO5

c)

N5O2

d)

N2O6

4.

Which of the following is the correct formula for SiCl4?

a)

silicon tetrachloride

b)

silicon quadchloride

c)

monosilicon tetrachloride

d)

silicon chloride

5.

Which of the following is the correct formula for P₄S₁₀?

a)

tetrapotassium decasulfide

b)

phosphorus decasulfide

c)

tetraphosphorus decasulfide

d)

phosphorus (X) sulfide

6.
In chemical compounds, covalent bonds form when
a)
the electronegativity difference between two atoms is very large.
b)
electrons are completely transferred between two metals.
c)

pairs of electrons are shared between two non-metal atoms.

d)

two non-metal atoms are attracted to each other by opposite charges.

7.

What type of bond involves the sharing of electrons between atoms?

a)

covalent bond

b)

ionic bond

c)

metallic bond

d)

transfer bond

8.

What two types of atoms make a covalent bond?

a)

2 non-metals

b)

1 metal and 1 non-metal

c)

2 metals

9.

An electron located in the outermost shell of the atom, that can be transferred to or shared with another atom.

a)

Ionic bond

b)

Valence electrons

c)

Ion

d)

Anion

10.

Type of covalent bond in which the electrons are being shared equally.

a)

Nonpolar bond

b)

Reactant

c)

Coefficient

11.

When two nonmetals do not share electrons evenly, the resulting covalent bond will be


(a)  
Choose from the below words
polar
nonpolar
ionic
metallic
12.

What type of covlaent bond is the strongest?

a)

single

b)

Double

c)

coordination

d)

triple

13.

How many electrons are shared in a single bond?

a)

2 pairs

b)

4

c)

2

d)

1

14.

How many electrons are shared in a double bond?

a)

2

b)

4 pairs

c)

6

d)

4

15.
What is the correct formula for this molecule?
a)
NH
b)
N3H
c)
NH3
d)
NH4
16.
Which of these is not a real bond in chemistry?
a)
James
b)
Ionic
c)
Covalent
17.
How many bonds does carbon have to create in order to satisfy the octet rule
a)

1

b)

2

c)

3

d)

4

18.
Is this image an example of covalent bonding?
a)

Yes

b)

No

19.
Atoms want
(a)  
Choose from the below words
a full outer shell of electrons.
one electron short of a full shell.
kit kats
20.

Which is the correct Lewis dot structure for the molecule fluorine, F2?

a)

A

b)

B

c)

C

d)

D

21.
Hydrogen needs _____ electrons in its valence shell to be stable.
a)
4
b)
6
c)
8
d)
2
22.

How many electrons should argon have around its Lewis dot model?

a)

5

b)

6

c)

7

d)

8

23.

Which is the correct Lewis dot structure for ammonia, NH3?

a)
b)
c)
d)
24.

Which Lewis Dot Model drawing correctly shows an O2 molecule?

a)
b)
c)
d)
25.
Each element wants to gain or lose electrons so that it can have the same electron configuration as......
a)

a noble gas

b)

other elements in its family

c)

other elements in its period

d)

it used to have before reacting

26.
Where are metals located on the periodic table?
a)
Blue
b)
Green
c)
Red
27.
Where are the nonmetals located on the periodic table? 
a)
Blue
b)
Red
c)
Green
28.

VSEPR theory is a model for predicting

a)

ionization energy

b)

the strength of metallic bonds

c)

the shape of molecules

d)

lattice energy values

29.

Which of the following covalent bonds is the most polar?

a)

H-N

b)

H-C

c)

H-H

d)

H-F

30.

A neutral group of atoms held together by covalent bonds is a

a)

chemical formula

b)

molecular formula

c)

molecule

d)

polyatomic ion

31.

According to VSEPR theory, molecules adjust their shapes to keep which of the following as far apart as possible?

a)

electrons closest to the nuclei

b)

pairs of valence electrons

c)

mobile electrons

d)

protons

32.

If the difference in electronegativity between two bonding atoms is less than 1.7 but greater than .03 the bond is

a)

ionic

b)

polar covalent

c)

metallic

d)

nonpolar covalent

33.

The red dots indicate .


(a)  
Choose from the below words
lone pairs
covalent bond pairs
34.

What type of bond is pictured?

a)

Ionic bond

b)

Single Covalent Bond

c)

Double Covalent Bond

d)

Triple Covalent Bond

35.

How many lone pairs are pictured?

a)

0

b)

2

c)

3

d)

4

36.
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
37.

Which is the correct molecular structure for carbon dioxide?

a)
b)
c)
d)
38.

Electronegativity _______ across a period and ______ down a group.

a)

increases, increases

b)

increases, decreases

c)

decreases, increases

d)

decreases, decreases

39.

Which of these atoms is the most electronegative?

a)

Bromine

b)

Fluorine

c)

Hydrogen

d)

Potassium

40.

Electronegativity refers to an atom's ability to _____________ shared electrons in a covalent bond.

a)

attract

b)

donate

41.

The polarity of a bond is determined by...

a)

The sum of the electronegativities of the two atoms

b)

The difference in the electronegativities of the two atoms

c)

The charges of the atoms

d)

None of the Above

42.

What must the difference in electronegativity between two atoms be in order for the bond between them to be nonpolar covalent?

a)

less than 0.4

b)

greater than 1.7

c)

between 0.4 and 1.7

d)

exactly 0

43.
What elements have zero electronegativity?
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
44.
Choose the correct shape for this molecule:
a)
Bent
b)
Linear
c)
Tetrahedral
d)
Trigonal pyramidal
45.

What is the name of this compound? (HINT: think of what the formula for this compound would be)

a)

P2O5

b)

Phosphorous PentaOxide

c)

Diphosphorous pentaoxide

d)

Phosphourous Oxide

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