Free Printable Types of Chemical Reactions and Balancing Practice

1.

(a) H₂ + (b) Cl₂ → (c) HCl

Choose from the below words

1

2

3

4

5

6

7

8

9

10

2.

What is the right part of a chemical equation called?

2H₂ + O₂ ---> 2H₂O

a)

Reactants

b)

Yields

c)

Products

d)

Chemical Equation

3.

In a balanced equation, the total number of atoms of each element on the left side (reactants) is _____ the total number of atoms on the right side (products).

a)

equal to

b)

greater than

c)

less than

d)

unequal to

4.

The Law of Conservation of Mass states that mass is ______ during a chemical reaction.

a)

created

b)

destroyed

c)

converted into energy

d)

neither created nor destroyed

5.

What is the number before a chemical formula called?

Example: 2H₂ + O₂ ---> 2H₂O

a)

Coefficient

b)

Atom

c)

Subscript

d)

Equation

6.

(a) Al + (b) O₂ → (c) Al₂O₃

Choose from the below words

4

3

2

1

5

6

7

8

9

10

7.

(a) Fe + (b) O₂ → (c) Fe₂O₃

Choose from the below words

4

3

2

1

5

6

7

8

9

10

8.

What is the left part of a chemical equation called?

2H₂ + O₂ ---> 2H₂O

a)

Reactants

b)

Yields

c)

Products

d)

Chemical equation

9.

(a) ZnS + (b) O₂ → (c) ZnO + (d) SO₂

Choose from the below words

2

3

1

4

5

6

7

8

9

10

10.

(a) Sb + (b) O₂ → (c) Sb₄O₆

Choose from the below words

4

3

1

5

6

7

8

9

10

2

11.

(a) AgNO₃ + (b) Ni → (c) Ni(NO₃)₂ + (d) Ag

Choose from the below words

1

2

5

6

7

8

9

10

3

4

12.

(a) Zn + (b) AgCl → (c) ZnCl₂ + (d) Ag

Choose from the below words

1

2

5

6

7

8

9

10

3

4

13.

(a) KI + (b) Pb(NO₃)₂ → (c) KNO₃ + (d) PbI₂

Choose from the below words

1

2

5

6

7

8

9

10

3

4

14.

(a) Ca + (b) H₂O → (c) Ca(OH)₂ + (d) H₂

Choose from the below words

1

2

5

6

7

8

9

10

3

4

15.

(a) Li + (b) H₂SO₄ → (c) Li₂SO₄ + (d) H₂

Choose from the below words

2

1

5

6

7

8

9

10

3

4

16.

(a) S₈ + (b) O₂ → (c) SO₂

Choose from the below words

1

8

5

6

7

9

10

3

4

2

17.

(a) C₂H₂ + (b) O₂ → (c) CO₂ + (d) H₂O

Choose from the below words

2

5

4

6

7

9

10

3

1

8

18.

(a) H₂SO₄ + (b) NaCN → (c) HCN + (d) Na₂SO₄

Choose from the below words

2

1

6

7

9

10

3

8

4

5

19.

(a) NH3→ (b) N2 + (c) H2

Choose from the below words

2

1

3

6

7

9

10

8

4

5

20.

(a) Cu + (b) H₂SO₄ → (c) CuSO₄ + (d) H₂O + (e) SO₂

Choose from the below words

1

2

6

7

9

10

8

4

5

3

21.

(a) AgNO₃ + (b) NaCl → (c) AgCl + (d) NaNO₃

Choose from the below words

1

6

7

9

10

8

4

5

3

2

22.

(a) FeCl₃ + (b) NaOH → (c) Fe(OH)₃ + (d) NaCl

Choose from the below words

1

3

7

9

10

8

4

5

2

6

23.

(a) Mg(OH)₂ + (b) H₂SO₄ → (c) MgSO₄ + (d) H₂O

Choose from the below words

1

2

3

4

5

6

7

8

9

10

24.

(a) AgNO₃ + (b) CuCl₂ → (c) AgCl + (d) Cu(NO₃)₂

Choose from the below words

2

1

3

4

5

6

7

8

9

10

25.

(a) C₃H₈ + (b) O₂ → (c) CO₂ + (d) H₂O

Choose from the below words

1

5

3

4

2

6

7

8

9

10

26.

(a) NaOH + (b) H₃PO₄ → (c) H₂O + (d) Na₃PO₄

Choose from the below words

3

1

2

4

5

6

7

8

9

10

27.

(a) MgCl₂ + (b) NaOH → (c) Mg(OH)₂ + (d) NaCl

Choose from the below words

1

2

3

4

5

6

7

8

9

10

28.

(a) Fe + (b) CuSO₄ → (c) Cu + (d) Fe₂(SO₄)₃

Choose from the below words

2

3

1

4

5

6

7

8

9

10

29.

(a) H₂S → (b) H₂ + (c) S₈

Choose from the below words

8

1

2

3

4

5

6

7

9

10

30.

(a) Na₂SO₄ + (b) CaF₂→ NaF + (c) CaSO₄

Choose from the below words

1

3

4

5

6

7

8

9

10

31.

(a) Mg + (b) CuSO₄ → (c) Cu + (d) MgSO₄

Choose from the below words

1

2

3

4

5

6

7

8

9

10

32.

(a) AgNO₃ + (b) Cu → (c) Ag + (d) Cu(NO₃)₂

Choose from the below words

2

1

3

4

5

6

7

8

9

10

33.

What is the little number after an element in a chemical equation called? Example:Cl₂

(a)

Choose from the below words

Subscript

Coefficient

Atom

Equation

34.

When the chemical equation is balanced, what is the SUM of all of the coefficients?

(a)

35.

When the equation is balanced, what is the SUM of the coefficients?

(a)

36.

When the equation is balanced, what is the SUM of the coefficients?

(a)

37.

When the equation is balanced, the SUM of the coefficients is

(a)

38.

What reaction has the following general formula:

AB --> A + B

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

39.

What reaction has the following general formula:

A + CD --> C + AD

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

40.

What reaction has the following general formula:

AB + CD --> CB + AD

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

41.

What reaction has the following general formula:

A + B --> AB

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

42.

What reaction has the following general formula:
$C_xH_y\ +\ O_2\ ->CO_{2\ }+\ H_2O$

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

43.

What is the general reaction scheme for a single replacement reaction?

a)

A + B --> AB

b)

AB --> A + B

c)

A + CD --> C + AD

d)

AB + CD --> CB + AD

e)

$C_xH_y+O_2\ ->\ CO_2+H_2O$

44.

What is the general reaction scheme for a combustion reaction?

a)

A + B --> AB

b)

AB --> A + B

c)

A + CD --> C + AD

d)

AB + CD --> CB + AD

e)

$C_xH_y+O_2\ ->\ CO_2+H_2O$

45.

What is the general reaction scheme for a combination reaction?

a)

A + B --> AB

b)

AB --> A + B

c)

A + CD --> C + AD

d)

AB + CD --> CB + AD

e)

$C_xH_y+O_2\ ->\ CO_2+H_2O$

46.

What is the general reaction scheme for a double replacement reaction?

a)

A + B --> AB

b)

AB --> A + B

c)

A + CD --> C + AD

d)

AB + CD --> CB + AD

e)

$C_xH_y+O_2\ ->\ CO_2+H_2O$

47.

What is the general reaction scheme for a decomposition reaction?

a)

A + B --> AB

b)

AB --> A + B

c)

A + CD --> C + AD

d)

AB + CD --> CB + AD

e)

$C_xH_y+O_2\ ->\ CO_2+H_2O$

48.

What type of reaction is the following:
$2H_2+O_2->2H_2O$

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

49.

What type of reaction is the following:
$BaCl_2+2KI\ ->\ 2KCl\ +\ BaI_2$

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

50.

What type of reaction is the following:
$C_{11}H_{24}+17O_2->\ 11CO_2\ +\ 12H_2O$

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

51.

What type of reaction is the following:
$2KI\ ->\ 2K\ +\ I_2$

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

52.

What type of reaction is the following:
$2NaHCO_3->\ Na_2CO_3+CO_2+H_2O$

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

53.

What type of reaction is the following:
$Zn\ +\ 2HCl\ ->\ ZnCl_2+H_2$

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

54.

What type of reaction is the following:
$3CuS\ +2Al\ ->\ Al_2S_3+3Cu$

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

55.

What type of reaction is the following:
$2C_4H_{10}\ +13O_2\ ->\ 8CO_2+10H_2O$

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

56.

What type of reaction is the following:
$Na_2S\ +2HCl\ ->\ H_2S+2NaCl$

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

57.

What type of reaction is the following:
$Ag_3N\ +\ 3HBr->3AgBr+H_3N$

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

58.

If an element is diatomic it should have a subscript of___

a)

2, always

b)

2, only when it is by itself

c)

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

59.

In writing a chemical equation that produces hydrogen gas, the correct representation of hydrogen gas is

a)

2H

b)

OH

c)

H

d)

H₂

60.

What are the products of the reaction: MgO ->?

a)

Mg₊O₂

b)

Mg₊O

c)

2MgO

d)

CO₂ + H₂O

61.

What are the products of this reaction:

C₂H₄ + O₂ -->

a)

C₂O₂ + H₄

b)

CO₂ + H₂+ O₂

c)

CO + H

d)

CO₂ + H₂O

e)

No Reaction

62.

What are the products for octane (C₈H₁₈) combusting?

a)

CO₂ + H₂O

b)

C + H₂ + O₂

c)

C + H + O

d)

C₈ + H₁₈

63.

Which of these is a product for H₂O -->

a)

H2

b)

OH

c)

H

d)

O

e)

H2O2

64.

Predict the products for the reaction of Aluminum and Oxygen

(a)

Choose from the below words

Al2O3

AlO2

AlO

Al3O2

AlO3

65.

Which of these is a product for the decomposition of Carbon tetrachloride (CCl4)

a)

CCl2

b)

Cl2

c)

Cl

d)

C4

e)

C2

66.

Which of these is a product for the decomposition of ammonia (NH₃)

a)

H2

b)

N2H2

c)

N

d)

H

e)

H3

67.

What is the product when Calcium reacts with chlorine?

a)

CaCl₂

b)

CaCl

c)

Ca₂Cl

d)

Ca + Cl₂

e)

Ca + Cl

68.

What are the products of the reaction:

K + O₂ -->

a)

KO₂

b)

KO

c)

K₂O

d)

OK₂

e)

O₂K

69.

What is the term for the number written below and to the right of a chemical symbol in a formula?

Example: H₂O

a)

Coefficient

b)

Subscript

c)

Superscript

d)

Exponent

70.

Which of the following is a characteristic of a balanced chemical equation?

a)

Different number of atoms on each side

b)

Equal number of atoms of each element on both sides

c)

More products than reactants

d)

More reactants than products

Types of Chemical Reactions and Balancing Practice

Total questions: 70

Worksheet time: 1hrs 6mins

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