Free Printable TYPES OF CHEMICAL REACTION AND FORMULAE OF COMPOUNDS

1.

What is the type of reaction shown above?

a)

Synthesis

b)

Double Replacement

2.

What type a reaction is taking place in this picture?

a)

Single Replacement

b)

Double Replacement

3.

A decomposition reaction can be represented as _____________________.

a)

AB → A + B

b)

A + B → AB

4.

What is the product in the following chemical equation?
H₂ + O₂ -->

a)

H₂ + O₂

b)

H₂O

5.

Which of the following is the general formula for a Single replacement reaction?

a)

AB → A + B

b)

AB + C → AC + B

6.

Which type of reaction has the following general pattern?
ABC → A + B + C

a)

decomposition

b)

synthesis

7.

This pictures simulates what type of reaction?

a)

Single Replacement

b)

Double Replacement

8.

What does (l) mean when seen in a reaction equation?

a)

Light

b)

Liquid

c)

Laugh

d)

Long

9.

One element trades places with another element in a compound.

a)

Single Replacement

b)

Double Replacement

10.

AB + CD --> CB + AD

a)

Synthesis

b)

Double Replacement

11.

What are the reactants in the chemical equation pictured?

a)

CH₄ and O₂

b)

CO₂ and H₂O

12.

The red numbers in the image below represent ________

a)

subscripts

b)

coefficients

c)

I don't know, and don't want to try

13.

Is this balanced?...
Fe + S --> FeS

a)

YES!

b)

NO!

14.

Is this balanced?...
Al + O₂ --> 2Al₂O₃

a)

Yes!

b)

NO!

15.

The small blue numbers in the image represent ________

a)

subscripts

b)

coefficients

c)

I don't know, and don't want to try

16.

compound ---> element + element

a)

synthesis

b)

decomposition

c)

combustion

d)

single replacement

17.

What reaction has the following general formula:

A + CD --> C + AD

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

18.

What reaction has the following general formula:

A + B --> AB

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

19.

What reaction has the following general formula:

AB + CD --> CB + AD

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

20.

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

21.

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)

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

22.

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)

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

23.

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

24.

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

25.

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

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

26.

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

27.

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

28.

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

29.

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

30.

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

31.

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

32.

Identify the following chemical reaction.

3 HBr + 1 Al(OH)₃ ----> 3 H₂O + 1 AlBr₃

a)

Synthesis (or combination)

b)

Decomposition

c)

Single displacement

d)

Double displacement

33.

Identify the following chemical reaction.

Pb + FeSO₄ ----> PbSO₄ + Fe

a)

Synthesis (or combination)

b)

Decomposition

c)

Single displacement

d)

Double displacement

34.

Coal contains carbon and other elements. Carbon dioxide forms when coal burns in the presence of oxygen. Which of these is the best evidence that a chemical reaction occurs when coal burns?

a)

The shape of the coal changes

b)

Oxygen is present

c)

A new substance is produced

d)

Coal is made up of more than one element

35.

Which of the following is a compound?

a)

zinc (Zn)

b)

magnesium (Mg)

c)

sodium chloride (NaCl)

d)

potassium (K)

36.

Which of the following is an element?

a)

potassium chloride (KCl)

b)

water (H₂O)

c)

carbon (C)

d)

calcium carbonate (CaCO₃)

37.

The following is what type of reaction:
PbCl₂ + AgNO₃ → Pb(NO₃)₂ + AgCl

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

38.

The following is what type of reaction:
NH₃ + HCl → NH₄Cl

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

39.

What is decomposition?

a)

putting substances together

b)

breaking substances apart

c)

element replacing another element in a compoud

d)

burning of a subtance

40.

What type of chemical reaction is this?
Al(OH)₃ → Al₂O₃ + H₂O

a)

Decomposition

b)

Combustion

c)

Synthesis

d)

Single Replacement

41.

In this type of reaction, ions in two compounds switch.

a)

Synthesis

b)

Combustion

c)

Single Replacement

d)

Double Replacement

42.

Ca + AlCl₃ --> CaCl₂+Al

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

43.

In this type of reaction, one element replaces another in a compound.

a)

Synthesis

b)

Combustion

c)

Single Replacement

d)

Double Replacement

44.

In this type of reaction, one reactant turns into several different products.

a)

Decomposition

b)

Synthesis

c)

Combustion

d)

Single Replacement

45.

This reaction always starts with a hydrocarbon that reacts with oxygen and produces carbon dioxide and water.

a)

Decomposition

b)

Synthesis

c)

Combustion

d)

Single Replacement

46.

Two Reactants and One Product

a)

Decomposition

b)

Synthesis

c)

Combustion

d)

Single Replacement

47.

What type of reaction is being demonstrated in this picture?

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

48.

Si + S₈ --> Si₂S₄

a)

Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

49.

C₄H₁₂ + O₂ → CO₂ + H₂O

a)

Synthesis

b)

Combustion

c)

Single Replacement

d)

Double Replacement

50.

Pb(NO₃)₂ --> PbO + NO₂ + O₂

a)

Synthesis

b)

Decomposition

c)

Single Displacement

d)

Combustion

51.

KOH + H₃PO₄ --> K₃PO₄+H₂O

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

52.

The following is what type of reaction:
PbCl₂ + AgNO₃ → Pb(NO₃)₂ + AgCl

a)

Combination/Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

53.

The following is what type of reaction:
NH₃ + HCl → NH₄Cl

a)

Combination/Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

54.

What is decomposition?

a)

putting substances together

b)

breaking substances apart

c)

element displacing another element in a compound

d)

burning of a substance

55.

What type of chemical reaction is this?
Al(OH)₃ → Al₂O₃ + H₂O

a)

Decomposition

b)

Combustion

c)

Combination/Synthesis

d)

Single Displacement

56.

Ions in two compounds switch.

a)

Combination/Synthesis

b)

Combustion

c)

Single Displacement

d)

Double Displacement

57.

3Ca + 2AlCl₃ --> 3CaCl₂+2Al

a)

Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

58.

One element replaces another in a compound.

a)

Combination/Synthesis

b)

Combustion

c)

Single Displacement

d)

Double Displacement

59.

Two Reactants and One Product

a)

Decomposition

b)

Combination/Synthesis

c)

Combustion

d)

Single Displacement

60.

What type of reaction is taking place in this picture?

a)

Combination/Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

61.

4Si + S₈ --> 2Si₂S₄

a)

Combination/Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

62.

3KOH + H₃PO₄ --> K₃PO₄+3H₂O

a)

Combination/Synthesis

b)

Decomposition

c)

Single displacement

d)

Double displacement

63.

Which of the following is the general formula for a decomposition reaction?

a)

A + B → AB

b)

AB → A + B

c)

AB + C → AC + B

d)

AB + CD → AC + BD

64.

At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?

a)

the product is doubled

b)

the product is half the mass of the reactants

c)

the mass is the same

d)

the mass changes depending on the reaction

65.

What reaction has the following general formula:

A + B --> AB

a)

Combination/Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

e)

Combustion

66.

What reaction has the following general formula:

AB + CD --> CB + AD

a)

Combination/Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

e)

Combustion

67.

What reaction has the following general formula:

A + CD --> C + AD

a)

Combination/Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

e)

Combustion

68.

Combining substances to form a one new substance

a)

Displacement

b)

Synthesis

c)

Decomposition

d)

Oxidation

69.

Breaking down a substance into simpler substances

a)

Displacement

b)

Synthesis

c)

Decomposition

d)

Oxidation

70.

What type of reaction is the equation 2NaCl →2Na +Cl₂?

a)

Synthesis Reaction

b)

Decomposition Reaction

c)

Single Displacement Reaction

d)

Double Displacement Reaction

71.

Cu + 2Ag(NO₃) → 2Ag + Cu(NO₃)

a)

Synthesis Reaction

b)

Decomposition Reaction

c)

Single Displacement Reaction

d)

Double Displacement Reaction

72.

Ca₃(PO₄)2 + 3 H₂SO₄ + 3 CaSO₄ + 2 H₃(PO₄)

a)

Synthesis Reaction

b)

Decomposition Reaction

c)

Single Displacement Reaction

d)

Double Displacement Reaction

73.

Which of the following is an example of a chemical change?

a)

melting a stick of butter

b)

dissolving salt in water

c)

using magnesium to displace hydrogen gas from water

74.

Consider the chemical equation CH₄ + 2 O₂ → CO₂ + 2 H₂O. In this equation, CH₄ is a

a)

product

b)

reactant

c)

displacement

75.

During an endothermic reaction, what happens to energy in relation to the surroundings?

a)

released to

b)

absorbed from

c)

mixed with

76.

CxHy +O₂--> H₂O + CO₂

a)

Decomposition

b)

Double replacement

c)

Combustion

d)

Single Replacement

77.

Si + S₈ --> Si₂S₄

a)

Synthesis (combination)

b)

Decomposition

c)

Single replacement

d)

Double replacement

78.

Which chemical reaction always starts with a hydrocarbon that reacts with oxygen and produces carbon dioxide and water?

a)

Decomposition

b)

Synthesis

c)

Combustion

d)

Single Replacement

79.

Based on the activity series, will this reaction occur?
Ni (s) + H₂O (l) →

a)

Yes

b)

No

80.

Which metal is more reactive than calcium?

a)

magnesium

b)

potassium

c)

silver

d)

aluminum

81.

Which metal is more reactive than calcium?

a)

magnesium

b)

potassium

c)

silver

d)

aluminum

82.

Predict the product(s) of this reaction (don't worry about balancing):

SrI₂ +Br₂→

a)

Sr + I₂Br₂

b)

SrBr + I₂

c)

SrBr₂ + I₂

d)

Sr + IBr₂

83.

What is the correct formula for the compound, lithium oxide?

a)

LiO

b)

Li₂O

c)

LiO₂

d)

Li₂O₂

84.

What is the formula for manganese(III) oxide?

a)

MgO

b)

Mg₂O₃

c)

MnO

d)

Mn₂O₃

85.

From the following ionic compounds, choose the name-formula pair that is not correctly matched.

a)

sodium sulfide Na₂S

b)

ammonium nitrate
NH₄NO₃

c)

sodium sulfate
Na₂SO₃

d)

calcium oxide CaO

86.

Name the following ionic compound: MgSO₄

a)

magnesium sulfoxide

b)

magnesium sulfide

c)

magnesium sulfate

d)

magnesium oxide

87.

Name the following ionic compound: Cr(NO₂)₃

a)

chromium nitrite

b)

chromium nitride

c)

chromium III nitride

d)

chromium III nitrite

88.

The chemical formula of Iron (III)bromide is

a)

FeBr

b)

Fe(III)Br

c)

FeBr₃

d)

Fe₂Br₃

89.

How do the following two elements bond together?
Na¹⁺ F^1-

a)

NaF

b)

NaF₃

c)

Na₃F

d)

Na₁F₂

90.

How do the following two elements bond together?
Cr³⁺ O^2-

a)

CrO

b)

Cr₃O₂

c)

Cr₂O₃

d)

CrO₃

91.

How do the following two elements bond together?
K¹⁺ S^2-

a)

KS

b)

K₈S

c)

K₆S₃

d)

K₂S

92.

How do the following two elements bond together?
Al³⁺ O^2-

a)

AlO

b)

Al₂O₃

c)

Al₃O₆

d)

Al₃O₂

93.

Cu⁺² and OH ^-

a)

CuOH₂

b)

Cu₂OH

c)

Cu(OH)₂

d)

correct answer is not given

94.

When adding a subscript to a polyatomic ion, you should...

a)

multiply any subscripts on the polyatomic ion by the subscript you are adding

b)

put parentheses (brackets) around the polyatomic ion before adding a subscript

c)

write the new subscript next to any subscripts on the polyatomic ion

d)

put the polyatomic ion in square brackets before adding the subscript

95.

Sodium Chloride

(a)

96.

Magnesium Oxide

(a)

97.

Sodium Hydroxide

(a)

98.

Magnesium Hydroxide

(a)

99.

Magnesium Chloride

(a)

100.

Zinc Sulphate

(a)

101.

Copper(II) Nitrate

(a)

102.

Silver Nitrate

(a)

103.

Lead(II) Iodide

(a)

104.

Calcium Carbonate

(a)

105.

Calcium Chloride

(a)

106.

Iron(II) Hydroxide

(a)

107.

Copper(II) Oxide

(a)

108.

Silver Chloride

(a)

109.

Iron(III) Oxide

(a)

110.

Aluminium Oxide

(a)

111.

Ammonium Nitrate

(a)

112.

Copper(II) Sulphate

(a)

113.

Lead(II) Sulphate

(a)

114.

Ammonium Sulphate

(a)

TYPES OF CHEMICAL REACTION AND FORMULAE OF COMPOUNDS

Total questions: 114

Worksheet time: 2hrs 48mins

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