wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Unit 8: Chemical Reaction Review

Total questions: 45

Worksheet time: 1hrs 11mins

Name
Class
Date
1.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

2.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

3.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

4.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

5.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

6.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

7.

Which of these reactions are decomposition reactions? Select all that apply.

a)

N2O4 ---> N2 + 2O2

b)

Pb(NO3)2 (aq) + 2NaI (aq) ---> PbI2(s) + 2NaNO3(aq)

c)

2C2H6 + 7O2 ---> 4CO2 + 6H2O

d)

H2CO3 ---> H2O + CO2

8.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

9.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

10.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

11.

2 or more different elements that are bonded together is called...

a)

A. element

b)

B. compound

c)

C. mixture

d)

D. solution

12.
A substance that contains only one type of atom is a(n)
a)
compound
b)
element
c)
heterogeneous mixture
d)
homogeneous mixture
13.
Is salt (NaCI) a compound or a element
a)
Compound
b)
element
14.
Which of the following lists only elements?
a)
H2O + OH, MgCl2
b)
H2O, KF, Ne
c)
KCl, Ag, Au
d)
K, Cl, N
15.

Which of these is an element?

a)

Salt (NaCl)

b)

Water (H20)

c)

Oxygen (O)

d)

Carbon Dioxide (CO2)

16.

Which of these is a compound?

a)

Aluminium (Al)

b)

Carbon Dioxide (CO2)

c)

Nitrogen (N)

d)

Mud

17.

When a reaction creates a compound, you must...

a)

Criss-cross the charges to determine the compound's subscripts.

b)

Copy the subscripts from the reactant side.

c)

Look up the number of valence electrons.

d)

Criss-cross the valence electrons to determine the coefficient.

18.

Choose the products for the following reaction.


NH3 -->

a)

N

b)

H

c)

N2

d)

H2

19.

Choose the correct answer to balance and predict the products for the following reaction:

CaO -->

a)

CaO --> Ca + O2

b)

2 CaO --> 2 Ca + O2

c)

CaO --> Ca + O

d)

2 CaO --> Ca2 + O2

20.

Without balancing the final equation, predict the products for the synthesis reaction:  Li + Cl2 →Li\ +\ Cl_2\ \rightarrow  ?

a)

LiCl2LiCl_2  

b)

LiClLiCl_{ }  

c)

Li2Cl2Li_2Cl_2  

d)

Li2ClLi_2Cl_{ }  

21.

What are the products of this reaction:

C2H4 + O2 →

a)

C2O2 + H4

b)

CO2 + H2 + O2

c)

CO + H

d)

CO2 + H2O

22.

What type of chemical reaction always starts with a hydrocarbon that reacts with oxygen to produce carbon dioxide and water?

a)

Decomposition

b)

Synthesis

c)

Combustion

d)

Single Replacement

23.

What are products for this single replacement reaction?

Fe + H2SO4 🡪 ?

a)

Fe2(SO4)3 + H

b)

FeSO4 + H

c)

Fe2(SO4)3 + H2

d)

H + FeSO4

24.

If an element is diatomic it should have a subscript of___

a)

1, always

b)

2, only when it is an element

c)

it shouldn't have a subscript, it should have a coefficent

d)

2, when bonded in a compound

25.
What is the coefficient of the oxygen molecule in the elephant toothpaste equation?
2 H2O2 -> 2 H2O + O2
a)
0
b)
1
c)
2
d)
4
26.
The Law of Conservation of Mass proves that -
a)
the number of atoms in a chemical reaction does not change
b)
there are more atoms on the reactant side than the product side
c)
there are more atoms on the product side than the reactant side
d)
no new matter can be made
27.
How many atoms are there TOTAL in:
H2SO4
a)
6
b)
5
c)
7
d)
3
28.

How many Hydrogen are in 4 H2O?

a)
6
b)
8
c)
2
d)
4
29.

The substances listed on the right side of a chemical equation are the

a)

Yields

b)

Reactants

c)

Products

d)

Precipitates

30.

The substances listed on the left side of a chemical equation are the

a)

Products

b)

Coefficients

c)

Precipitates

d)

Reactants

31.

In the following reaction, how many moles of aluminum are produced?

3 Ca + 1 Al2O3 --> 2 Al + 3 CaO

a)

1

b)

2

c)

3

d)

1/2

32.

In the following reaction, how many moles of calcium oxide are produced?

3 Ca + 1 Al2O3 --> 2 Al + 3 CaO

a)

1

b)

2

c)

3

d)

1/2

33.

How many different elements are present in H2COCH2

a)

5

b)

4

c)

3

d)

2

34.

4 CF2Cl2

a)

C = 4, F = 4, Cl = 2

b)

C = 1, F = 8, Cl = 8

c)

C = 4, F = 8, Cl = 8

d)

C = 1, F = 4, Cl = 8

35.

A ______ is a number written in front of a chemical formula.

a)

Coefficient

b)

Subscript

c)

Exponent

d)

Coordinator

36.

In the equation shown, what are the product(s)?

a)

N2 + H2

b)

NH3

37.

In the equation shown, what are the reactant(s)?

a)

N2 + H2

b)

NH3

38.

What does the number 3 represent in 4NH3?

a)

Subscript

b)

Superscript

c)

Coefficient

39.

Which of the following models best demonstrates a balanced chemical reaction formula?

a)
F
b)
G
c)
H
d)
J
40.
__Na + __Cl2 --> __NaCl
a)
1,1,2
b)
2,1,2
c)
2,1,1
d)
already balanced
41.
__NaClO3 --> __NaCl + __O2
a)
2,2,2
b)
2,2,3
c)
3,2,2
d)
1,2,3
42.
Balancing this reaction: ____ CH4 + ____ O2 ---> ____ CO2 + ____ H2O
a)
2,1,3,1
b)
1,2,1,2
c)
1,2,2,1
d)
2,1,1,2
43.
Balance this reaction: ____ NaF + ____ Br2 ---> ____ NaBr + ____ F2
a)
3,1,2,1
b)
1,2,3,4
c)
2,1,2,1
d)
1,2,1,2
44.
Balance this reaction: ____ BaS + ____ PtF2 ---> ____ BaF2 + ____ PtS
a)
1,1,1,1
b)
1,2,1,1
c)
1,1,1,2
d)
2,1,1,1
45.
What do the coefficients need to be in the following equation in order to be balanced?
_Mg + _Cl2 → _MgCl2
a)
1, 2,1
b)
already balanced
c)
2,1,1
d)
1,1,2

Similar Resources on Wayground

Types of Reactions

43 questions

Types of Reactions

quiz

Worksheet

•

11th Grade

ÔN TẬP GIỮA KÌ I - HÓA 12 (ESTE - LIPIT)

42 questions

ÔN TẬP GIỮA KÌ I - HÓA 12 (ESTE - LIPIT)

quiz

Worksheet

•

10th - 12th Grade

Combustion reactions

45 questions

Combustion reactions

quiz

Worksheet

•

9th - 12th Grade

EOC Chemistry 2020 (Practice Exam)

40 questions

EOC Chemistry 2020 (Practice Exam)

quiz

Worksheet

•

9th - 12th Grade

Science Laboratory Safety and Equipment Test

50 questions

Science Laboratory Safety and Equipment Test

quiz

Worksheet

•

9th - 12th Grade

Properties of matter

40 questions

Properties of matter

quiz

Worksheet

•

10th - 11th Grade

Thermal Energy and Transfer

40 questions

Thermal Energy and Transfer

quiz

Worksheet

•

6th Grade - University

Ácidos e bases

48 questions

Ácidos e bases

quiz

Worksheet

•

9th - 12th Grade