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Molecular Compounds and Electron Dot Diagrams

Total questions: 38

Worksheet time: 38mins

Name
Class
Date
1.

Which of the following are properties of molecular compounds?

a)

High melting and boiling points

b)

Conduct electricity in solid state

c)

Low melting and boiling points

d)

Poor conductors of electricity

2.

A molecular formula is a representation of a molecule that indicates the number and type of atoms present in the molecule.

a)

True

b)

False

3.

The chemical formula of dinitrogen tetroxide is

a)

Ni₂O₄

b)

NiO

c)

N₂O₄

d)

NiO₂

4.
What is the formula for Hexaboron Monosilicide
a)
B6Si
b)
BSi
c)
BSi6
d)
B6Si6
5.
What is the formula for Tricarbon Octahydride?
a)
Ca3O
b)
C2H8
c)
C3H8
d)
Ca3H8
6.
What types of elements combine to form a molecular compound?
a)
two or more metals
b)
two or more different nonmetals
c)
a metal and a non-metal
d)
two of the same nonmetal
7.

What is the name of Br6F10 ?

a)

Bromium fluoride

b)

Hexabromine fluoride

c)

Bromium decafluoride

d)

Hexabromine decafluoride

8.

When there is only one atom of the first element in a molecular compound's formula, the prefix mono is used.

a)

True

b)

False

9.

When there is only one atom of the second element in a molecular compound's formula, the prefix mono is used.

a)

True

b)

False

10.

Choose the proper name for CH4, methane.

a)

carbon hydrogen

b)

carbon tetrahydrogen

c)

carbon hydride

d)

carbon tetrahydride

11.

What is the correct name for P₃Cl₆?

a)

Potassium chloride

b)

Phosphorous chloride

c)

Triphosphorous hexachloride

d)

Tetraphosphorous heptachloride

12.

How can you distinguish a MOLECULAR/COVALENT compound?

a)

2 or more nonmetals

b)

1 metal and 1 nonmetal

c)

all metals

d)

all transition metals

13.

Name the prefix associated with:

7

a)

septa

b)

hexa

c)

octa

d)

hepta

14.
What is the best definition for subscript?
 
a)
The big number that tells you the number of molecules.
b)
The atomic number
c)
The little number that tells the number of atoms for each element.
15.

What is the correct name for NO?

a)

Mononitrogen Monoxide

b)

Nitrogen Monoxide

c)

Mononitrogen Dioxide

d)

Nitrogen Oxide

16.

What is Sulfur Trichloride?

a)

SCl3

b)

SiCl3

c)

SCl4

d)

Si3Cl

17.

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.

18.
What is the chemical formula for Tetrasulfur pentoxide?
a)
SO
b)
S4O
c)
S4O5
d)
S5O4
19.
What is the name of C3Cl8 ?
a)
Carbon octachloride
b)
Tricarbon octachloride
c)
Carbon trichloride
d)
Octacarbon trichloride
20.
What is the chemical formula for Nitrogen triiodide?
a)
NI
b)
N3I
c)
NI3
d)
None of these
21.
What is the chemical formula for CP ?
a)
Carbon phosphide
b)
Monocarbon phosphide
c)
Carbon monophosphide
d)
none of the above
22.
The chemical formula of sulfur hexabromide is
a)
SBr₆
b)
S₆Br
c)
S(VI)Br
d)
S6Br
23.

Outer shell electrons are called

a)

outer electrons

b)

valence electrons

c)

negatives

d)

super electrons

24.

How many chlorine atoms are in a molecule of carbon tetrachloride?

a)

4

b)

3

c)

7

d)

9

25.

In the compound N2O, what does the subscript 2 indicate?

a)

There are 2 sodium atoms for each atom of oxygen

b)

There are 2 nitrogen atoms for each atom of oxygen

c)

There are 2 oxygen atoms for each atom of nitrogen

d)

Nitrogen atoms are twice a large as oxygen

26.
Prefixes are used only for _______________ compounds
a)
Ionic
b)
covalent
27.
Classify: 
sulfur dioxide, SO2
a)
ionic compound
b)
molecular compound
c)
metallic element
d)
non-metallic element
28.

Which of the following is NOT a molecular compound?

a)

SF6

b)

CaO

c)

N2O5

d)

NH3

29.

Write the formula: iodine heptafluoride

a)

IF7

b)

I2F14

c)

IHF7

d)

IF6

30.
What is the total number of atoms in this molecule?
a)
11
b)
3
c)
8
d)
10
31.

This could be the dot diagram of

a)

Mg

b)

Cl

c)

C

d)

O

32.

This is a correct dot diagram for neon (Ne)

a)

true

b)

false

33.

This is a correct dot diagram for nitrogen (N)

a)

true

b)

false

34.
This could be the dot diagram of
a)
P
b)
Ar
c)
Na
d)
B
35.

Which of these is correct?

a)
b)
c)
36.

How many valence electrons should Magnesium have in its Lewis dot model?

a)

1

b)

2

c)

3

d)

4

37.
How many valence electrons are found in atoms of group 1?
a)
7
b)
6
c)
4
d)
1
38.
How many valence electrons are found in atoms of group 14?
a)
4
b)
3
c)
14
d)
16

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