Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Balancing and Classifying Equations

Total questions: 47

Worksheet time: 2hrs 47mins

Name
Class
Date
1.
How many atoms of carbon (C) are in C6H12O6?
a)
3
b)
6
c)
12
d)
24
2.
Which type of chemical reaction is shown?
a)
double replacement
b)
composition
c)
combustion
d)
decomposition
3.
Which type of reaction can be recognized by the general pattern?
a)
combustion
b)
single replacement
c)
composition
d)
decomposition
4.

Which type of reaction is:

C7H16 + 10 O2 → 7 CO2 + 8 H2O

a)
Synthesis
b)
Decomposition
c)
Single Displacement
d)
Combustion
5.

Which of the following is an example of a synthesis reaction?

a)
b)
c)
d)
6.

Which of the following is an example of a decomposition reaction?

a)
b)
c)
d)
7.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
8.

How would you indicate that a catalyst was used in a chemical equation?

a)

Write it in with the reactants

b)

Write it in with the products

c)

Write it above the arrow

d)

It doesn't matter. It can be left our.

9.
What is a reactant?
a)
a volatile chemical
b)
a dangerous substance
c)
the substances you start with in a chemical reaction
d)
the substances that are formed by a chemical reaction 
10.
What is a product?
a)
a fancy word for make-up
b)
a volatile chemical
c)
the substances you start with in a chemical reaction
d)
the substances that are formed by a chemical reaction
11.
The number of atoms you begin with in a chemical reaction ...
a)
must be the same as the number of  atoms you end with
b)
must be an even number
c)
can be different to the number you finish with
d)
changes depending on how much energy is formed
12.
What mathematical function do coefficients perform in a balanced equation?
a)
addition
b)
subtraction
c)
multiplication
d)
division
13.

Balance the following:

____ Fe + ____ Cl2 → ____ FeCl3

a)
1,1,2
b)
1,3,1
c)
2,2,3
d)
2,3,2
14.

Balance the following:

____ Al + ____ O2 → ____ Al2O3

a)
2,3,4
b)
4,3,2
c)
1,1,2
d)
2,1,1
15.

Balancing the following:

____ Al + ____ HCl → ____ AlCl3 + ____ H2

a)
1,3,1,2
b)
2,3,2,3
c)
2,6,2,3
d)
3,2,6,2
16.

Balance the following:

____ H2SO4 + ____ NaNO2 → ____ HNO2 + ____ Na2SO4

a)
1,1,2,1
b)
1,2,2,1
c)
2,3,3,2
d)
4,3,2,1
17.
Balance the following: Fluorine and Aluminum oxide react to produce Aluminum fluoride and Oxygen
a)
6,2,4,3
b)
3,4,2,6
c)
5,1,3,2
d)
3,2,4,3
18.

Balance the following:

Aluminum nitrate and Carbonic acid react to form

Aluminum carbonate and Nitric acid

a)
4,1,2,5
b)
1,3,6,2
c)
2,1,3,6
d)
2,3,1,6
19.

Which type of reaction is:

2 NaBr + Ca(OH)2 → CaBr2 + 2 NaOH

a)
Synthesis
b)
Single Displacement
c)
Double Displacement
d)
Combustion
20.
Which type of reaction is: C2H4 + 3 O2 → 2 CO2 + 2 H2O
a)
Synthesis
b)
Decomposition
c)
Single Displacement
d)
Combustion
21.

Which type of reaction is:

2 H3AsO4 → As2O5 + 3 H2O

a)
Synthesis
b)
Decomposition
c)
Single Displacement
d)
Combustion
22.

Which type of reaction is:

2 NH3 + H2SO4 → (NH4)2SO4

a)
Synthesis
b)
Decomposition
c)
Single Displacement
d)
Double Displacement
23.

Which type of reaction is:

3 Pb + 2 H3PO4 → 3 H2 + Pb3(PO4)2

a)
Synthesis
b)
Single Displacement
c)
Double Displacement
d)
Combustion
24.

Which type of reaction is:

C7H16 + 10 O2 → 7 CO2 + 8 H2O

a)
Synthesis
b)
Decomposition
c)
Single Displacement
d)
Combustion
25.

Which type of reaction is:

8 Ag2S → 8 S + 16 Ag

a)
Synthesis
b)
Decomposition
c)
Single Displacement
d)
Double Displacement
26.

Which type of reaction is:

4 (NH4)3PO4 + 3 Pb(NO3)4 → 12 NH4NO3 + Pb3(PO4)4

a)
Synthesis
b)
Decomposition
c)
Single Displacement
d)
Double Displacement
27.

Which type of reaction is:

2 K + MgBr2 → 2 KBr + Mg

a)
Synthesis
b)
Decomposition
c)
Single Displacement
d)
Double Displacement
28.

Balance the following:

____ Fe + ____ Cl2 → ____ FeCl3

a)
1,1,2
b)
1,3,1
c)
2,2,3
d)
2,3,2
29.

Which type of reaction is:

C7H16 + 10 O2 → 7 CO2 + 8 H2O

a)
Synthesis
b)
Decomposition
c)
Single Displacement
d)
Combustion
30.

Which type of reaction is:

3 Pb + 2 H3PO4 → 3 H2 + Pb3(PO4)2

a)
Synthesis
b)
Single Displacement
c)
Double Displacement
d)
Combustion
31.

In the equation, 2Mg + O2 ---> 2MgO, which are the reactants?

a)

Mg and O2

b)

MgO

c)

Mg and MgO

d)

O and MgO

32.

The blue numbers in the image represent

a)

subscripts

b)

coeffiecients

c)

roman numerals

d)

none of the answer options are correct

33.

The red numbers in the image represent

a)

subscripts

b)

coeffiecients

c)

roman numerals

d)

none of the answer options are correct

34.

When balancing a chemical equation, you can only change _________, you can never change _______!

a)

coefficients, subscripts

b)

subscripts, coefficients

c)

formulas, subscripts

d)

coefficients, formula units

35.
The following reaction is an example of what reaction type? 
CoCO3 → CoO + CO2
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
36.
Si + S8 --> Si2S4
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Double replacement
37.
How many atoms of carbon (C) are in C6H12O6?
a)
3
b)
6
c)
12
d)
24
38.
Is the following equation balanced?...
Al + O2 --> 2Al2O3
a)
Yes!
b)
No!
39.
The number of atoms you begin with in a chemical reaction ...
a)
must be the same as the number of  atoms you end with
b)
must be an even number
c)
can be different to the number you finish with
d)
changes depending on how much energy is formed
40.

What is the Law of Conservation of Mass?

a)

It states that matter cannot be created or destroyed.

b)

It states that energy cannot be created or destroyed.

c)

It states that matter can be created or destroyed.

d)

It states that sound can be created or destroyed.

41.

Is the equation balanced?: 2H2O + O2 --> 4MgO + 3Fe

a)

yes

b)

no

42.
What is the right part of a chemical equation called...
2H2 + O2 --> 2H2O
a)
Reactants
b)
Products 
c)
Yields 
d)
Chemical Equation 
43.
Why is the following chemical equation not balanced?
H2 + O2 --> H2O
a)
each side of the equation has a different number of oxygen atoms
b)
each side of the equation has a different number of hydrogen atoms
c)
each side has the same mass
44.
What mathematical function do coefficients perform in a balanced equation?
a)
addition
b)
subtraction
c)
multiplication
d)
division
45.
Balance this equation
_Al +_HCl --> _H2 +_AlCl3
a)
2, 6, 3, 2
b)
it is already balanced
c)
4, 12, 3, 4
d)
2, 1, 4, 5
46.
Balance this equation-
__P4 + __O2 --> __P2O3
a)
it is already balanced
b)
2, 1, 3
c)
1, 2, 3
d)
1, 3, 2
47.
N2 + H2 = NH4
a)
Balanced
b)
Unbalanced

Similar Resources on Wayground

Environmental Semester ONE Review

47 questions

Environmental Semester ONE Review

quiz

Worksheet

•

9th - 12th Grade

Year 9 - A Life Changing Moment 3

42 questions

Year 9 - A Life Changing Moment 3

quiz

Worksheet

•

9th Grade

Test Preliminare

50 questions

Test Preliminare

quiz

Worksheet

•

10th Grade

esci pero wala yung mga cycle bahala kayo sa buhay niyo

51 questions

esci pero wala yung mga cycle bahala kayo sa buhay niyo

quiz

Worksheet

•

11th Grade

Entomology Test Review (FA)

50 questions

Entomology Test Review (FA)

quiz

Worksheet

•

12th Grade

Scientific Method and Graphs

51 questions

Scientific Method and Graphs

quiz

Worksheet

•

9th - 12th Grade

Revisão AV1- CN- 1ª Série

50 questions

Revisão AV1- CN- 1ª Série

quiz

Worksheet

•

12th Grade

Sistem Tata Surya

50 questions

Sistem Tata Surya

quiz

Worksheet

•

7th - 9th Grade