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Worksheets

Molecules Practice

Total questions: 20

Worksheet time: 13mins

Name
Class
Date
1.

Write the chemical model for this molecule?

a)

H2O

b)

CO2

c)

O2

d)

H2O2

2.

Write the structural model for this molecule.

a)

b)

c)

d)

3.

The bonds in a molecule

a)

Energy

b)

Matter

4.

How do the number of bonds affect the potential energy of a molecule?

a)

Increase

b)

Decrease

c)

No effect

5.

What is the picture displayed?

a)

atom

b)

molecule

c)

element

6.

Two or more atoms connected together with a bond

a)

Ion

b)

Element

c)

Molecule

d)

Bond

7.

A connection between atoms

a)

Ion

b)

Element

c)

Molecule

d)

Bond

8.

Select the correct chemical model for this molecule.

a)

5C5H1O5N

b)

C5H5ON5

c)

C5H5ON5

d)

C5H5ON5

9.

Select the correct chemical model for this molecule.

a)

N5C5H5

b)

C5H5N5

c)

H5C5N5

d)

N5H5C5

10.

What is the correct model for this molecule?

a)
Si4F
b)
SiF4
c)
SiF
d)
Si4F4
11.

What is this?

a)

Atom

b)

Molecule

c)

Element

12.
How many atoms of carbon are used to make a molecule of sugar, C12H22O11?
a)
12
b)
22
c)
11
d)
Sugar is not a molecule
13.

Which of the following accurately describes the chemical model of the molecule shown above?

a)

3CH8O

b)

C3H7O

c)

C4H8O2

d)

C3H8O

14.

How many chlorine atoms in MgCl2:

a)

0

b)

1

c)

2

d)

4

15.

How many atoms of hydrogen are in ethanol? C2H6O

a)
5
b)
2
c)
6
d)
9
16.
Which of these is not an example of a molecule?
a)

CH4

b)
C
c)

C6H12O6

d)

H2O

17.

What does "di-" mean in "carbon dioxide"?

a)

2

b)

DIE!!!

c)

It has a bond

d)

of

18.

In the diagram representing the molecule of NH3NH_3 , how many atoms are there in total?

a)

3

b)

4

c)

5

d)

1

19.
How many elements are in C6H12O6?
a)

24

b)

6

c)
3
d)

12

20.

What is H2SO4   made up of?

a)
2 hydrogen, 1 sulfur, 4 oxygen
b)
1 hydrogen, 2 sulfur, 4 oxygen
c)
2 hydrogen & 4 sodium
d)
1 hydrogen & 6 sodium