Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

QUIZ-Classifying & Balancing Chemical Equations

Total questions: 35

Worksheet time: 1hrs 2mins

Name
Class
Date
1.
Name this reaction, CO2 + H2O --> H2CO3 
a)
Decomposition
b)
Single Replacement
c)
Synthesis
d)
Combustion
2.

Balance 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

3.
Name this reaction, Cl2 + 2KI -->  I2 + 2KCl
a)
Synthesis
b)
Single Replacement
c)
Double Replacement
d)
Decomposition
4.

What type of reaction is this?

3KOH + H3PO4 --> K3PO4 + 3H2O

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

5.
What type of reaction is this?
2Pb(NO3)2 --> 2PbO + 4NO2 + O2
a)
Synthesis 
b)
Decomposition
c)
Single displacement
d)
Decombustion
6.

Classify the following chemical reaction:

CH3CH2OH + 3O2 --> 2CO2 + 3H2O

a)

synthesis

b)

decomposition

c)

single replacement

d)

combustion

7.

Balance this equation:

H2 + Cl2 ---> HCl

a)

It is balanced.

b)

H2 + Cl2 ---> 2HCl

c)

3H2 + Cl2 ---> 6HCl

d)

H2 + 3Cl2 ---> 6HCl

8.
___C3H8 +___O2 --> ___CO2 + ___H2O
a)
1,5,3,4
b)
2,10,6,8
c)
already balanced
d)
1,5,5,4
9.
__Al + __Fe3N2 -->__AlN + __Fe
a)
already balanced
b)
4,2,4,6
c)
2,1,2,3
d)
1,2,1,3
10.
__Al + __Fe3N2 -->__AlN + __Fe
a)
already balanced
b)
4,2,4,6
c)
2,1,2,3
d)
1,2,1,3
11.
Which is the Law of Conservation of Matter?
a)
matter cannot be created or destroyed, it only changes form
b)
matter can be created but it cannot be destroyed, it never changes form
c)
matter can be destroyed but it cannot be created, it usually just changes form
d)
matter is an unproven theory created by Hans Geiger
12.

What are the coefficients that will balance the skeleton equation below?

__Na + __F₂ → __NaF

a)

1, 2, 1

b)

2, 1, 2

c)

1,1,1

d)

2,2,2

13.
_AgNO3 + _Cu →_Cu(NO3)2 + _Ag
a)
2 AgNO3 + 2 Cu → 3 Cu(NO3)2 + 1 Ag
b)
2 AgNO3 + 1 Cu → 1 Cu(NO3)2 + 2 Ag
c)
1 AgNO3 + 2 Cu → 2 Cu(NO3)2 + 1 Ag
d)
3 AgNO3 + 2 Cu → 3 Cu(NO3)2 + 2 Ag
14.
Which of the following is an example of synthesis?
a)
Na + Br2 --> NaBr
b)
KClO3 --> KCl + O2
c)
HgO + Cl2-->HgCl + O2
d)
Cl2 + NaBr --> NaCl + Br2
15.
In a chemical reaction, everything to the rightof the arrow is called ______________.
a)
Products
b)
Yields
c)
Molecules
d)
Reactants
16.
The substances at the beginning of a chemical equation are called the ____
a)
product
b)
yield
c)
chemical symbol
d)
reactants
17.
2 RbNO3 + BeF2 --> Be(NO3)2 + 2 RbF
a)
single displacement
b)
double displacment
c)
decomposition
d)
synthesis
18.
Which of the following is a sign that a chemical reaction has occurred?
a)
change in shape
b)
melting
c)
formation of a gas
d)
dissolving
19.
Is a a rusting bicycle a chemical or physical change?
a)
chemcial
b)
physical
20.
Is melting ice a chemical or physical change?
a)
chemical
b)
physical
21.
Si + S8 --> Si2S4
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Double replacement
22.
What will weigh more when a chemical change is complete?  The reactants before the chemical reaction, or the product after the reaction is complete?
a)
They both will weigh the same
b)
The product always weighs more than the reactant
c)
The reactant will weigh more than the product
d)
They both will loose mass after the reaction
23.
How many Oxygen (O) atoms are in 2C2HO8Cl2
a)
2
b)
16
c)
8
d)
5
24.
 Fill in the blank to balance the chemical equation. 
2KI  +  ____Cl2 →  2KCl  +  I2
a)
1
b)
2
c)
3
d)
4
25.
What coefficient should go in the blank space to balance the chemical equation? 
2Al  +____  HCl   →    2AlCl3  +  3H2
a)
2
b)
4
c)
3
d)
6
26.
Which of the following shows the correct way to balance the chemical equation?
Fe + O2 -> Fe2O3
a)
4Fe + 3O2 -> 2Fe2O3
b)
2 Fe + 3O2 -> Fe2O6
c)
4 Fe + O6 -> 2Fe2O3
d)
None of the options are correctly balanced.
27.
What is the total number of atoms present in 5Na3PO4
a)
5
b)
40
c)
55
d)
8
28.
Which of the following equations are correctly balanced?
a)
12CO2 +H2O --> C6H12O6 + O2
b)
CO2 + 9H2O --> C6H12O6 + O2
c)
CO2 + H2O --> 3C6H12O6 + O2
d)
6CO2 + 6H2O --> C6H12O6 + 6O2
29.
What is the little number after an element in a chemical equation called.
Example: H2
a)
Coefficient 
b)
Subscript
c)
Atom
d)
Equation
30.
Which of the following is a sign that a chemical reaction has occurred?
a)
change in shape
b)
melting
c)
formation of a gas
d)
dissolving
31.
Which of the following describes a precipitate?
a)
a liquid forms when a block of metal is heated
b)
a solid forms when one liquid is poured into another
c)
a gas forms when a solid is placed in a liquid
d)
bubbles form when an acid is poured on a rock
32.
If a chemical reaction is EXOTHERMIC, the temperature would....
a)
Stay the same
b)
Increase
c)
Decrease
33.

A student mixed two chemicals to allow them to react. The temperature before the reaction was 25 ° C. The temperature after the reaction was 18° C. Which of the following is true?

a)

It is an exothermic reaction

b)

It is an endothermic reaction

34.

O2(g) + 2 H2 (g) → 2 H2O (g) + EnergyO_2\left(g\right)\ +\ 2\ H_2\ \left(g\right)\ \rightarrow\ 2\ H_2O\ \left(g\right)\ +\ Energy  

a)

endothermic

b)

exothermic

35.

6 CO2+ 6 H2O + Energy → C6H12O6 + 6 O26\ CO_2+\ 6\ H_2O\ +\ Energy\ \rightarrow\ C_6H_{12}O_6\ +\ 6\ O_2

a)

endothermic reaction

b)

exothermic reaction

Similar Resources on Wayground

Chemical or Physical Changes

40 questions

Chemical or Physical Changes

quiz

Worksheet

•

10th - 11th Grade

LENGUAJE DE LA QUIMICA

31 questions

LENGUAJE DE LA QUIMICA

quiz

Worksheet

•

10th Grade

Chemical Reactions

30 questions

Chemical Reactions

quiz

Worksheet

•

10th - 12th Grade

pas smt 1 kimia xi 2019/2020

40 questions

pas smt 1 kimia xi 2019/2020

quiz

Worksheet

•

1st Grade - University

PROPIEDADES PERIÓDICAS Y NOMENCLATURA QUÍMICA

40 questions

PROPIEDADES PERIÓDICAS Y NOMENCLATURA QUÍMICA

quiz

Worksheet

•

1st - 12th Grade

Practice Test - Atomic Structure

40 questions

Practice Test - Atomic Structure

quiz

Worksheet

•

6th - 12th Grade

13-09-2021 Year 10 Chemistry Quiz 1 C1- Atomic Structure Pt1

30 questions

13-09-2021 Year 10 Chemistry Quiz 1 C1- Atomic Structure Pt1

quiz

Worksheet

•

8th - 10th Grade