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Worksheets

Covalent Names and Formulas

Total questions: 62

Worksheet time: 2hrs 1mins

Name
Class
Date
1.
A binary covalent bond exists between
a)
2 metals
b)
1 metal and 1 nonmetal
c)
2 nonmetals
d)
Any 2 elements
2.
What is the correct name for C4H6?
a)
Carbon Hexahydride
b)
Pentacarbon Pentahydride
c)
Hexacarbon Tetrahydride
d)
Tetracarbon Hexahydride
3.
What is the correct name for NO?
a)
Mononitrogen Monoxide
b)
Nitrogen Monoxide
c)
Mononitrogen Dioxide
d)
Nitrogen Oxide
4.
What is the formula for Tricarbon Octahydride?
a)
Ca3O
b)
C2H8
c)
C3H8
d)
Ca3H8
5.
What is Sulfur Trichloride?
a)
SCl3
b)
SiCl3
c)
SCl4
d)
Si3Cl
6.
Phosphorous trichloride
a)
PCl3
b)
P3Cl
c)
P3Cl3
d)
PCL
7.
P2O5
a)
Phosphorus Oxide
b)
Pentaphosphorus Dioxide
c)
Diphosphorous pentoxide
d)
Phosphoric Oxygen
8.
PBr5
a)
Phosphorus Bromide
b)
Phosphorus Pentabromide
c)
Pentaphosphorus bromide
d)
Phosphorus Bromine
9.
As4O10
a)
arsenic oxide
b)
quadarsenic decoxide
c)
tetraarsenic decoxide
d)
arsenic decoxide
10.
Covalent compounds
a)
Share electrons
b)
transfer electrons
c)
contain a sea of electrons
d)
conduct electricity
11.
A covalent compound made of one sulfur and two oxygen atoms would be named
a)
sulfur dioxide.
b)
sulfur oxide.
c)
disulfur oxide.
d)
sulfide oxygen.
12.
The covalent compound N2O5 would be named
a)
nitrogen oxide.
b)
dinitrogen oxide.
c)
nitrogen pentoxide.
d)
dinitrogen pentoxide.
13.
Disulfur trioxide
a)
S3O2
b)
SO
c)
S2O3
d)
S2O
14.
Bromine monofluoride
a)
Br1F1
b)
BrF
c)
Br2F
d)
BrF2
15.
Is Hydrogen considered a metal or a non-metal?
a)
Metal
b)
Non-metal
16.
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 nonmetal atoms.
d)
two nonmetal atoms are attracted to each other by opposite charges.
17.
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
18.
Is carbon considered a metal or a non-metal?
a)
metal
b)
nonmetal
c)
other
19.
Are the atoms more stable when they are bonded together or when they are apart? 
a)
Bonded Together
b)
Apart
20.
Hydrogen needs _____ electrons in its valence shell to be stable.
a)
4
b)
6
c)
8
d)
2
21.
What is a double bond?
a)
a bond between two atoms
b)
one pair of electrons shared between two atoms
c)
two pairs of electrons shared between two atoms
d)
James Bond's brother
22.

Which statement best describes the relationship between atoms & molecules.

a)

molecules are made of atoms that are chemically bonded together.

b)

atoms are made of molecules that are chemically bonded together.

c)

molecules are made of a mixture of atoms and compounds.

d)

atoms are made of protons, neutrons & electrons.

23.

Why do all bonds form?

a)

so the number of protons equals the number of electrons

b)

to decrease an atom's stability

c)

to create a full set of valence electron

24.

Covalent compounds are:

Select all options that form a true statement.

a)

molecules

b)

a specific ratio of cations and anions held together by electrostatic forces

c)

sharing at least one pair of valence electrons

d)

polar (sharing electrons unequally) or non-polar (sharing electrons equally)

e)

electron thieves, they take electrons from other atoms

25.

Which type of compounds are composed of molecules

a)

ionic

b)

covalent

26.

What is the correct name of this compound?


CBr4

a)

Carbon Bromide

b)

Monocarbon tetrabromide

c)

Carbon tetrabromide

d)

Tetracarbon Bromide

27.

Choose the correct formula for this compound:


Dinitrogen Pentasulfide

a)

N5S2

b)

N2S5

c)

Ni2Se5

d)

NS

28.

What is the correct name of this compound?


P4O10

a)

Tetraphosphorous Decoxide

b)

Triphosphorous Nonoxide

c)

Phosphorous Oxide

d)

Decaphosphorous Tetroxide

29.

Choose the correct formula for this compound:


Carbon Disulfide

a)

C2S

b)

CS

c)

CS2

d)

CaS

30.

What is the correct name of this compound?


N2O3

a)

Trinitrogen Dioxide

b)

Dinitrogen Tetroxide

c)

Dinitrogen Trioxide

d)

Nitrogen Oxide

31.

Choose the correct formula for this compound:


Silicon Tetrachloride

a)

SCl4

b)

SCl

c)

SiCl4

d)

SC4

32.

What is the correct name of this compound?


CH4

a)

Tetracarbon Hydroxide

b)

Carbon Tetrahydride

c)

Monocarbon Tetrahydrogen

d)

Carbon Hydrogenide

33.

Choose the correct formula for this compound:


Fluorine Monoiodide

a)

PI

b)

F3I

c)

FI

d)

IF

34.

What is the correct name of this compound?


SO2

a)

Disulfur Monoxide

b)

Oxygen Sulfide

c)

MonoSulfur Dioxide

d)

Sulfur Dioxide

35.

Choose the correct formula for this compound:


Iodine Heptafluoride

a)

I7F

b)

IF6

c)

IF7

d)

F7I

36.
What is the correct name for C4H6?
a)
Carbon Hexahydride
b)
Pentacarbon Pentahydride
c)
Hexacarbon Tetrahydride
d)
Tetracarbon Hexahydride
37.
What is the correct name for NO?
a)
Mononitrogen Monoxide
b)
Nitrogen Monoxide
c)
Mononitrogen Dioxide
d)
Nitrogen Oxide
38.
What is the formula for Tricarbon Octahydride?
a)
Ca3O
b)
C2H8
c)
C3H8
d)
Ca3H8
39.
What is Sulfur Trichloride?
a)
SCl3
b)
SiCl3
c)
SCl4
d)
Si3Cl
40.
Phosphorous trichloride
a)
PCl3
b)
P3Cl
c)
P3Cl3
d)
PCL
41.
As4O10
a)
arsenic oxide
b)
quadarsenic decoxide
c)
tetraarsenic decoxide
d)
arsenic decoxide
42.
CO
a)
Carbon Oxide
b)
Carbon Oxygen
c)
Dicarbon dioxide
d)
Carbon Monoxide
43.
SeF4
a)
Tetraselenium fluoride
b)
Selenium Fluoride
c)
Selenium tetraflouride
d)
Selenium (IV) Fluoride
44.
Bromine monoflouride
a)
Br1F1
b)
BrF
c)
Br2F
d)
BrF2
45.
Carbon dioxide
a)
C2O2
b)
C2O
c)
CO
d)
CO2
46.
Give the formula for... Dinitrogen trioxide
a)
N(II)O3
b)
N5O6
c)
N3O2
d)
N2O3
47.

When a covalent bond forms _______________ are shared.

a)

protons

b)

nutrons

c)

valence electrons

d)

quarks

48.

Valence electrons are located _____________ the nucleus of an atom

a)

close to

b)

farthest from

c)

randomly around

49.

How many valence electrons does Oxygen (O) have?

a)

6

b)

8

c)

15

d)

16

50.

An atom of nitrogen (N) has _______ open bonding sites.

a)

5

b)

4

c)

3

d)

8

51.

Dihydrogen monosulfide?

a)

H2S

b)

HS2

c)

HS

d)

H2S2

52.

Nitrogen trichloride?

a)

NCl3

b)

NCl2

c)

NC3

d)

Cl3N

53.

What does the prefix di- mean?

a)

One

b)

Two

c)

Three

d)

Four

54.

What is the formula for Dichlorine Monoxide?

a)

Co₃O

b)

ClO₂

c)

Cl₂O

d)

(Cl₂)₂O

55.
What is the name of the following compound?
S6O3
a)
sulfurehexa trioxide
b)
hexasulfur trioxide
c)
hexasulfide trioxide
d)
trioxygen hexasulfide
56.
What is the correct name for NO?
a)
Mononitrogen Monoxide
b)
Nitrogen Monoxide
c)
Mononitrogen Dioxide
d)
Nitrogen Oxide
57.
What is Sulfur Trichloride?
a)
SCl3
b)
SiCl3
c)
SCl4
d)
Si3Cl
58.

How many valence electrons does Phosphorus Have?

a)

15

b)

3

c)

5

d)

1

59.

How many more electrons will phosphorus need to be stable?

a)

15

b)

5

c)

3

d)

1

60.

How many hydrogen atoms will need to bond with phosphorus to make a stable molecule?

a)

1

b)

2

c)

3

d)

4

61.

Which of these is a covalent compound?

a)

NaCl

b)

H2O

c)

FeS

d)

AlCl3

62.

Which of these is a covalent compound?

a)

MgS

b)

LiF

c)

CuO

d)

SO

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