Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Types of Reactions and Balancing Equations

Total questions: 48

Worksheet time: 1hrs 12mins

Name
Class
Date
1.
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 
2.
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
3.
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
4.
What mathematical function do coefficients perform in a balanced equation?
a)
addition
b)
subtraction
c)
multiplication
d)
division
5.

Balance the following:

____ Fe + ____ Cl2 → ____ FeCl3

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

Balance the following:

____ Al + ____ O2 → ____ Al2O3

a)
2,3,4
b)
4,3,2
c)
1,1,2
d)
2,1,1
7.

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
8.

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
9.

Which type of reaction is:

2 NaBr + Ca(OH)2 → CaBr2 + 2 NaOH

a)
Synthesis
b)
Single Displacement
c)
Double Displacement
d)
Combustion
10.
Which type of reaction is: C2H4 + 3 O2 → 2 CO2 + 2 H2O
a)
Synthesis
b)
Decomposition
c)
Single Displacement
d)
Combustion
11.

Which type of reaction is:

2 H3AsO4 → As2O5 + 3 H2O

a)
Synthesis
b)
Decomposition
c)
Single Displacement
d)
Combustion
12.

Which type of reaction is:

2 NH3 + H2SO4 → (NH4)2SO4

a)
Synthesis
b)
Decomposition
c)
Single Displacement
d)
Double Displacement
13.

Which type of reaction is:

3 Pb + 2 H3PO4 → 3 H2 + Pb3(PO4)2

a)
Synthesis
b)
Single Displacement
c)
Double Displacement
d)
Combustion
14.

Which type of reaction is:

C7H16 + 10 O2 → 7 CO2 + 8 H2O

a)
Synthesis
b)
Decomposition
c)
Single Displacement
d)
Combustion
15.

Which type of reaction is:

8 Ag2S → 8 S + 16 Ag

a)
Synthesis
b)
Decomposition
c)
Single Displacement
d)
Double Displacement
16.

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
17.
Which is the correct formula for:
 three hydrogen (H)
one sulfur (S)
four oxygen (O)
a)
H3SO4
b)
HSO4
c)
H4S3O
d)
H2O
18.
Number of C's in 2Na₂CO₃
a)
1
b)
2
c)
3
d)
5
19.
The number of Na's in Na₂CO₃
a)
1
b)
2
c)
3
d)
6
20.
How many Elements are in the compound C2H8O ?
a)
2
b)
1
c)
3
d)
0
21.
How many total atoms are in the compound C2H8O ?
a)
11
b)
2
c)
8
d)
1
22.
How many Aluminum are in Al2O3?
a)
3
b)
2
c)
5
23.
How many Sodium (Na) are in 6NaCl?
a)
1
b)
12
c)
6
24.
How many Sodium (Na) are in 6NaCl?
a)
1
b)
12
c)
6
25.
How many Chlorine are in MgCl2?
a)
2
b)
1
c)
3
26.
How many Magnesium are in 10MgCl2?
a)
10
b)
5
c)
20
27.
Consider the chemical equation CH4 + 2 O2 → CO2 + 2 H2O. In this equation, CH4 is a
a)
product
b)
reactant
c)
displacement
28.
In chemical reactions, what does the principle of conservation of mass mean?
a)
Matter is not created or destroyed.
b)
The total mass of the reactants is greater than the total mass of the products.
c)
The total mass of the reactants is less than the total mass of the products.
d)
Matter is not changed.
29.

How many reactants are in A + B ---> C ?

a)

1

b)

2

c)

3

d)

4

30.
2H2 + O2 ----> 2H2O What is the product?
a)
------>
b)
2H2O
c)
2H2+ O2
31.
This is used to represent the number of each atom being represented. 
a)
A Exponent
b)
The Coefficient
c)
A Molecule
d)
The Subscript
32.
This appears on the left side of a chemical formula, and represents how many molecules there are. 
a)
An Atom
b)
The Subscript
c)
A Molecule
d)
The Coefficient
33.
If there are 4 H atoms on the reactant side, how many H atoms will be on the product side? 
a)
2
b)
4
c)
6
d)
You need more information to answer this question
34.

How many total atoms are in this formula? 3Zn2O3H

a)

6

b)

9

c)

18

35.

What is the coefficient for this formula? 9NaCl2

a)

9

b)

2

c)

1

d)

11

36.

What is the subscript in this formula? 3N2ONe

a)

3

b)

2

c)

1

d)

5

37.

This tells you the number of molecules you have of a substance

a)

coefficient

b)

subscript

c)

exponent

d)

chemical formula

38.

This tells you how many atoms of an element you have in a chemical formula

a)

coefficient

b)

subscript

c)

chemical symbol

d)

atomic number

39.

Is this equation balanced?

2H2O yields H2 + 2O2

a)

Yes

b)

No

40.
What type of reaction occurs in a hand warmer
a)
exothermic
b)
endothermic
41.
In an exothermic reaction, heat is ...
a)
taken in
b)
given out
42.

In an endothermic reaction, heat is ...

a)

taken in

b)

given out

43.
Baking bread and cooking an egg are examples of....?
a)
Endothermic processes
b)
Exothermic processess
c)
None of these 
44.
Is photosenthysis an Exothermic or an Endothermic reaction?
a)
Endothermic
b)
Exothermic
45.

What is an example of exothermic?

a)

firework

b)

ice pack

c)

coal

d)

wood

46.

Which of the following process is exothermic?

a)

Candle was melting

b)

A puddle evaporating

c)

Dry ice (solid carbon dioxide) subliming to form gaseous carbon dioxide

d)

Water freezing to form ice

47.
If a chemical reaction is EXOTHERMIC, the temperature would....
a)
Stay the same
b)
Increase
c)
Decrease
48.
Is the combustion of gasoline endothermic or exothermic?
a)
Endothermic
b)
Exothermic

Similar Resources on Wayground

TEST Chapter 18

50 questions

TEST Chapter 18

quiz

Worksheet

•

9th - 10th Grade

G9 Final Exam Review - Part 1

50 questions

G9 Final Exam Review - Part 1

quiz

Worksheet

•

9th Grade

BT NITƠ

45 questions

BT NITƠ

quiz

Worksheet

•

11th Grade

FQ9 tabela periódica

47 questions

FQ9 tabela periódica

quiz

Worksheet

•

9th Grade

ôn tập chương nguyên tử

53 questions

ôn tập chương nguyên tử

quiz

Worksheet

•

10th - 12th Grade

Bảng tuần hoàn các nguyên tố hóa học

43 questions

Bảng tuần hoàn các nguyên tố hóa học

quiz

Worksheet

•

10th - 12th Grade

1.C3.1-3 Heating Curves and Ions Practice

53 questions

1.C3.1-3 Heating Curves and Ions Practice

quiz

Worksheet

•

9th - 12th Grade

SNC 1DI - Chemistry

48 questions

SNC 1DI - Chemistry

quiz

Worksheet

•

9th Grade