wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Balancing Chemical Reactions and Reaction Types

Total questions: 48

Worksheet time: 3hrs 4mins

Name
Class
Date
1.
How many atoms of carbon (C) are in C6H12O6?
a)
3
b)
6
c)
12
d)
24
2.
How many Sodium (Na) are in 6NaCl?
a)
1
b)
12
c)
6
3.
What is the left part of a chemical equation called?
2H2 + O2 --> 2H2O
a)
Reactants
b)
Products 
c)
Yields 
d)
Chemical Equation 
4.
What is the right part of a chemical equation called...
2H2 + O2 --> 2H2O
a)
Reactants
b)
Products 
c)
Yields 
d)
Chemical Equation 
5.

Balance this equation
_Al +_HCl --> _H2 +_AlCl3

(a)  

6.

Balance this equation-
__P4 + __O2 --> __P2O3

(a)  

7.

When the equation H2O2 --> H2O + O2 is completely balanced, the coefficient for water is 

(a)  

8.

Balance the following reaction:

​ (a)   C + ​ (b)   H2 → ​ (c)   C3H8

Choose from the below words
3
4
1
2
5
9.

Balance the following reaction:

​ (a)   CaC2 + ​ (b)   H2O → ​ (c)   C2H2 + ​ (d)   Ca(OH)2

Choose from the below words
1
2
3
4
10.
Which problem is balanced?
a)
PbO2 + 2H2--> H2SO4
b)
SO2 + H20 --> H2SO4
c)
2Na + 2H2O --> 2NaOH + H2
d)
2Na + 2H2O --> 2NaOH + H
11.
The blue numbers in the image below represent ________
a)
Charges
b)
coefficients
c)
subscripts
d)
none of the answers are correct
12.
Name the part in red:

_2_H2 + _1_O2 -> _2_H2O
a)
Coefficient
b)
Product
c)
Yield
d)
Subscript
13.

Balance the following equation:

___ SeCl6+ ___ O2→___ SeO2+____Cl2

a)

1, 1, 1, 3

b)

2, 1, 2, 1

c)

1, 2, 1, 2

d)

2, 2, 2, 4

14.
What is the basic unit of matter and is the smallest particle of an element?
a)
Atoms
b)
Elements
c)
Compounds
d)
Molecules
15.
Two or more atoms chemically bonded together are called a
a)
atom
b)
element
c)
molecule
d)
mixture
16.

How many carbon atoms are there in a methane (CH4) molecule? 

a)
0
b)
1
c)
4
d)
5
17.
What is the total number of atoms in an ammonia (NH3) molecule?
a)
1
b)
2
c)
3
d)
4
18.
Carbon is considered an element while carbon dioxide is considered a compound. This is because carbon dioxide is –
a)
a gas at room temperature.
b)
made of two different elements.
c)
given off by green plants.
19.

What cacn you ONLY change to balance chemical reactions?

a)

Subscripts

b)

Superscripts

c)

Coefficients

20.

Balance the following reaction by including the missing coefficients:

__ Li3N + ___ NH4NO3 → ___ LiNO3 + ___(NH4)3N



(a)  

21.

Categorize the following numbers Into the correct category.

Categorize the following

3/4

2

.45

5

Cannot use as coefficients.
Can be used as coefficients.
22.
__Na + __Cl2 --> __NaCl
a)
1,1,2
b)
2,1,2
c)
2,1,1
d)
already balanced
23.
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__Na + __H2O --> __NaOH + __H2
a)
2,2 --> 2,1
b)
4,4 --> 4,1
c)
1,2 --> 2,4
d)
1,2 --> 2,1
24.

MgCl2 represents a chemical

a)

Element

b)

Chemical Formula

c)

Subscript

d)

Coefficient

25.

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

a)

Coefficients

b)

Reactants

c)

Products

d)

Precipitates

26.
The substances listed on the left side of a chemical equation are the
a)
Products
b)
Coefficients
c)
Precipitates
d)
Reactants
27.
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.
28.

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

__MgS + __O₂ → __MgO + __SO₂

a)

3,2,2,3

b)

2,3,2,2

c)

2,3,2,3

d)

3,2,2,1

29.

__(NH4)3PO4 + __Pb(NO3)4 --> __Pb3(PO4)4 + __NH4NO3

Hint: Count the polyatomic ions as a unit just like you would count atoms.

a)

2,1,1,6

b)

1,2,2,3

c)

4,3,1,12

d)

4,2,1,12

30.
__BF3 + __Li2SO3 --> __B2(SO3)3 + __LiF
a)
2,3,1,3
b)
2,3,1,6
c)
4,4,2,12
d)
3,3,1,9
31.

_AlBr3 + _K2SO4 → _KBr + _Al2(SO4)3

Hint: Count the polyatomic ion as a unit just like you would count atoms.

a)

6 AlBr3 + 1 K2SO4 → 6 KBr + 1 Al2(SO4)3

b)

2 AlBr3 + 3 K2SO4 → 6 KBr + 1 Al2(SO4)3

c)

1 AlBr3 + 1 K2SO4 → 2 KBr + 3 Al2(SO4)3

d)

2 AlBr3 + 3 K2SO4 → 1 KBr + 2 Al2(SO4)3

32.
In every balanced chemical equation, each side of the equation has the same number of ____.  
a)
coefficients
b)
moles
c)
molecules
d)
atoms of each element
33.

Balance the equation:

Si(OH)4+NaBr--> SiBr4+NaOH

Hint: Count the polyatomic ion as a unit just like you would count atoms.

a)

Si(OH)4+2NaBr--> SiBr4+NaOH

b)

Si(OH)4+4NaBr--> SiBr4+4NaOH

c)

Si(OH)4+NaBr--> SiBr4+4NaOH

d)

Si(OH)4+2NaBr--> SiBr4+2NaOH

34.

What reaction has the following general formula:

AB --> A + B

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

35.

What reaction has the following general formula:

A + CD --> C + AD

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

36.

What reaction has the following general formula:

AB + CD --> CB + AD

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

37.

What reaction has the following general formula:

A + B --> AB

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

38.

What is a combustion reaction?

a)

When chemicals react with fire.

b)

An explosive reaction.

c)

fuel + oxygen --> water + carbon dioxide

d)

fuel + carbon dioxide --> water + oxygen

39.

What type of reaction is this?

a)

a synthesis reaction

b)

a decomposition reaction

c)

a single replacement reaction

d)

a double replacement reaction

e)

a combustion reaction

40.

Which of the following is a synthesis reaction?

a)

2H2O > 2H2 + O2

b)

Fe + CuSO4 > FeSO4 + Cu

c)

Cu + SO4 > CuSO4

41.

Which of the following is a decomposition reaction?

a)

2H2O > 2H2 + O2

b)

Fe + CuSO4 > FeSO4 + Cu

c)

Cu + SO4 > CuSO4

42.

Which of the following is a single replacement reaction?

a)

2H2O > 2H2 + O2

b)

Fe + CuSO4 > FeSO4 + Cu

c)

Cu + SO4 > CuSO4

43.

Which of the following is a double replacement reaction?

a)

NaCl + AgNO3 > NaNO3 + AgCl

b)

Fe + CuSO4 > FeSO4 + Cu

c)

Cu + SO4 > CuSO4

44.

Which of the following is always a reactant in a combustion reaction?

a)

CO2

b)

H2O

c)

O2

d)

Both CO2 + H2O

45.

Which of the following are always a product of a combustion reaction?

a)

CO2

b)

H2O

c)

O2

d)

Both CO2 + H2O

46.

What type of reaction is the following:
BaCl2+2KI −> 2KCl + BaI2BaCl_2+2KI\ ->\ 2KCl\ +\ BaI_2  

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

47.

Identify the following chemical reaction.

Pb + FeSO4 ----> PbSO4 + Fe

a)

Synthesis

b)

Decomposition

c)

Single displacement

d)

Double displacement

48.

Put the equations in this order: decomposition, synthesis, combustion, single replacement, double replacement.

a)
b)
c)
d)
e)
1)
2)
3)
4)
5)

Similar Resources on Wayground

نخطيط و ادراج الشرائح

10 questions

نخطيط و ادراج الشرائح

quiz

Worksheet

•

KG - 12th Grade

AP1 - 1º Trim - 1ª Serie - Tecnico - Lógica Computacional

10 questions

AP1 - 1º Trim - 1ª Serie - Tecnico - Lógica Computacional

quiz

Worksheet

•

11th Grade

TOÁN LỚP 2

10 questions

TOÁN LỚP 2

quiz

Worksheet

•

7th - 12th Grade

Numéros à mille et au-delà

10 questions

Numéros à mille et au-delà

quiz

Worksheet

•

8th Grade

Novel Sejarah

10 questions

Novel Sejarah

quiz

Worksheet

•

12th Grade

2020 Sec 3E Physics Electromagnetic Spectrum Quiz

12 questions

2020 Sec 3E Physics Electromagnetic Spectrum Quiz

quiz

Worksheet

•

9th - 10th Grade

SINH07 BAI 46

10 questions

SINH07 BAI 46

quiz

Worksheet

•

7th Grade

Kuiz Tajwid

10 questions

Kuiz Tajwid

quiz

Worksheet

•

1st Grade