Free Printable Writing and Predicting Equations

1.

Identify the Reactants in this equation.

a)

A

b)

B

2.

What state of matter is this substance?

a)

solid

b)

liquid

c)

gas

d)

aqueous

3.

Identify the number in blue.

a)

Product

b)

Reactant

c)

Coefficient

d)

Subscript

4.

In what state is this substance?

a)

solid precipitate

b)

dissolved in water

c)

released as a gas

d)

liquid

5.

What are the blue numbers called?

a)

oxidation numbers

b)

subscripts

c)

group numbers

d)

product numbers

6.

How many atoms of nitrogen are in the compound shown above?

a)

1

b)

2

c)

3

d)

4

7.

Which compound is formed as a precipitate in this reaction?

a)

Pb(NO₃)₂

b)

KI

c)

PbI₂

d)

KNO₃

8.

What does the symbol inside the circle mean?

a)

"yields, or produces"

b)

"dissolved in water"

c)

"forms a precipitate"

d)

"released as a gas"

9.

Is the compound in the pink box a Reactant or a Product?

a)

Reactant

b)

Product

10.

How many molecules of KNO₃ are shown?

a)

1

b)

2

c)

3

d)

4

11.

How many HCl molecules do you need to balance this equation?
Mg + __HCl ---> MgCl₂ + H₂

a)

1

b)

2

c)

3

d)

4

12.

What is the total number of atoms present in 5Na₃PO₄

a)

5

b)

40

c)

55

d)

8

13.

Balance this equation

_Al +_HCl --> _H₂+_AlCl₃

a)

2,6,3,2

b)

it's already balanced

c)

4,12,3,4

d)

2,1,4,5

14.

What are the coefficients that would properly balance this equation?

__Ca + __H₂O --> __Ca(OH)₂ + __H₂

a)

2,1 --> 2,1

b)

1,2 --> 1,1

c)

1,2 --> 2,4

d)

1,2 --> 2,1

15.

What are the coefficients that would properly balance this equation?

__H₂ + __S --> __H₂S

a)

1,1 --> 1

b)

2,2 --> 2

c)

1,2 --> 1

d)

1,2 --> 2

16.

True/False: Products are written to the right of the reaction arrow in a chemical equation.

a)

True

b)

False

17.

True/False: There are 2 reactants in the chemical equation below.
$KClO_3\ \rightarrow\ KCl\ +\ O_2$

a)

True

b)

False

18.

Translate the word equation below:

Nitrogen reacts with Hydrogen to form Ammonia (NH₃).

a)

$N\ \ \rightarrow\ H\ +\ NH_3$

b)

$N_2\ +\ H_2\ \rightarrow\ NH_3$

c)

$N\ +\ H\ \rightarrow\ NH_3$

d)

$N_2\ \rightarrow\ H_2\ +\ NH_3$

19.

Translate the word equation below.

Hydrogen and Carbon Dioxide react to form Carbonic Acid (H₂CO₃).

a)

$H\ +\ CO_2\ \rightarrow\ H_2CO_3$

b)

$H\ \rightarrow\ CO_2\ +\ H_2CO_{3_{ }}$

c)

$H_2\ +\ CO_2\ \rightarrow\ H_2CO_3$

d)

$H_2\ \rightarrow\ CO_2\ +\ H_2CO_3$

20.

Translate the word equation below.

Carbon Dioxide and Hydrogen react to form Methane (CH₄) and Water

a)

$CO_{2_{\ }}+\ H_2O\ \rightarrow\ CH_4\ +H_2\$

b)

$CO_2\ \rightarrow\ H_2\ +\ CH_4\ +\ H_2O$

c)

$CO_2\ \ +\ H_2\ +\ CH_4\ \ \rightarrow\ H_2O$

d)

$CO_2\ \ +\ H_2\ \rightarrow\ CH_4\ +\ H_2O$

21.

Magnesium can be burned in oxygen to produce solid magnesium oxide.

a)

Mg + O₂→ MgO

b)

Mg+ O→ MgO

c)

Mg + CO₂→ MgO + C

d)

Mg + O₂→ Mg₂O₂

22.

Sodium reacts with chlorine gas to produce sodium chloride.

a)

NaCl→ Cl + Na

b)

Na+ CO₂ → NaCO₂

c)

Na + Cl₂→ NaCl

d)

Na + Cl → NaCl

23.

Iron reacts with solid sulfur to produce iron(II) sulfide powder.

a)

Fe + S → Fe₂S

b)

Fe + S → FeS

c)

Fe₂+ S→ Fe₂S₂

d)

Fe + S₂ → Fe₂S

24.

When hydrogen reacts with sulfur, a smelly gas, dihydrogen monosulfide, is produced.

a)

H₂ + S → HS

b)

H₂+ S → H₂S

c)

H + S→ HS

d)

H + S→ H₂S

25.

sodium phosphate and calcium chloride produce calcium phosphate and sodium chloride

a)

Na₃PO₄ + CaCl₂--> Ca₃(PO₄)₂ + NaCl

b)

Na₃PO₄ + CaCl₂--> Ca₄PO₂ + NaCl

c)

NaPO₄ + CaCl₂--> Ca(PO₄)₂ + NaCl

d)

NaPO₄ + CaCl₂--> Ca₂(PO₄)3 + NaCl

26.

Barium metal and water yields barium hydroxide and hydrogen gas

a)

Ba + H₂O --> Ba(OH)₂+ H₂

b)

Ba₂ + H₂O --> Ba(OH)₂+ H

c)

Ba + H₂O --> BaOH₂+ H

d)

Ba₂ --> Ba(OH)₂+ H₂

27.

Calcium oxide and water produces calcium hydroxide

a)

CaO + H₂O --> Ca(OH)₂

b)

Ca₂O₂+ H₂O --> Ca(OH)₂

c)

CaO + H₂O --> CaOH

d)

Ca₂O₂+ H₂O --> Ca(OH)₂

28.

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

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

29.

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

a)

Synthesis

b)

Decomposition

c)

Single Replacement Replacement

d)

Double Replacement Replacement

30.

What is decomposition?

a)

putting substances together

b)

breaking substances apart

c)

element replacing another element in a compoud

d)

burning of a subtance

31.

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

a)

Decomposition

b)

Combustion

c)

Synthesis

d)

Single Replacement

32.

3Ca + 2AlCl₃ --> 3CaCl₂+2Al

a)

Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

33.

One element replaces another in a compound.

a)

Synthesis

b)

Combustion

c)

Single Replacement

d)

Double Replacement

34.

Always starts with a Hydrocarbon that reacts with oxygen and produces carbon dioxide and water.

a)

Decomposition

b)

Synthesis

c)

Combustion

d)

Single Replacement

35.

Two Reactants and One Product

a)

Decomposition

b)

Synthesis

c)

Combustion

d)

Single Replacement

36.

C₄H₁₂ + O₂ → CO₂ + H₂O

a)

Synthesis

b)

Combustion

c)

Single Replacement

d)

Double Replacement

37.

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

38.

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

39.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

40.

Identify the type of chemical reaction

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

e)

Combustion

41.

Predict the products for the following reactants.
Mg + I₂ -->

a)

MgI

b)

MgI₂

c)

Mg + I₂

d)

Mg₂I

42.

Predict the products for the following reactants.
C₆H₁₂ + O₂ -->

a)

CO + H₂

b)

CO₂ + O₂

c)

C₃H₆O

d)

CO₂ + H₂O

43.

Predict the products for the following reactants.
AgNO₃ + Na₂CO₃ -->

a)

Ag₂CO₃ + NaNO₃

b)

No Reaction

c)

AgCO₃ + NO₃Na

d)

AgCO₃ + NaNO₃

44.

Predict the products for the following reactants.
Al + O₂ -->

a)

AlO

b)

AlO₂

c)

Al₂O₃

d)

Al₂O

45.

Predict the products for the following reactants.

K₂CO₃ + BaCl₂ -->

a)

No Reaction

b)

KCl + BaCO₃

c)

K₂Cl + BaCO₃

d)

KCl₂ + BaCO₃

46.

Predict the products for the following reactants.

Ag₂O -->

a)

Ag + O

b)

Ag + O₂

c)

AgO

d)

Ag₂ + O

47.

Based on the activity series, what are the predicted products of this reaction?

Br₂ (l) + KI (aq) →

a)

KBr + I₂

b)

KBr + I

c)

KBr₂ + I

d)

No Reaction

48.

Based on the activity series, will this reaction occur?

Au (s) + HCl (l) →

a)

AuCl + H

b)

No Reaction

c)

AuCl + H₂

d)

Au₂Cl + H₂

49.

What will be the result of the following:

LiBr + Na --->

a)

Li will replace Na

b)

Na will replace Br

c)

Na will replace Li

d)

no reaction will occur

50.

What will be the result of : Zn + AuCl₂->

a)

ZnCl₂ +Au

b)

ZnAu + Cl₂

c)

no reaction

d)

ClAu + Zn

51.

Predict the products of this DR reaction: NaCl + CaO ----->

a)

Na₂O + CaCl₂

b)

NaCa + OCl₂

c)

This reaction will not occur

d)

NaO + CaCl

52.

Double replacements reactions have to be checked on the metal activity series to see if they will occur.

a)

True

b)

False

53.

What are the products of this reaction: NaF + Ca(NO₃)₂ --->

a)

This reaction will not occur

b)

Na(NO₃) + CaF₂

c)

NaF₂ + Ca(NO₃)

d)

NaCa + F(NO₃)

54.

Predict the products of this reaction: Ag2S + CuCl2--->

a)

This reaction will not occur.

b)

AgCl + CuS

c)

Ag₂Cl₂ + CuS

d)

AgCu + SCl₂

55.

How do you determine the states of matter of the products in a double replacement reaction?

a)

Oxidation Number

b)

Activity Series on formula chart

c)

Solubility Rules on formula chart

d)

Ionic Charges

56.

What is a precipitate?

a)

A solid formed from a single replacement reaction

b)

An aqueous compound formed from single replacement reaction

c)

An aqueous compound formed from double replacement reaction

d)

A solid formed from a double replacement reaction

57.

What precipitate forms when you mix lead (II) nitrate with sodium chloride?

a)

sodium nitrate

b)

lead (II) chloride

c)

sodium lead

d)

chloride nitrate

58.

Which of these lists contains only soluble substances?

a)

sodium nitrate, potassium chloride, calcium carbonate

b)

lead nitrate, lead chloride, lead sulfate

c)

calcium nitrate, copper chloride, ammonium phosphate

d)

silver nitrate, barium sulfate, copper carbonate

59.

NiCl₂ (nickel II chloride) is ...

a)

Soluble

b)

Insoluble

60.

Zinc Carbonate is...

a)

Soluble

b)

Insoluble

61.

Use the solubility chart to determine if this is a chemical reaction and if so, what formed a precipitate?

Li₂S + 2AgNO₃→ 2LiNO₃ + Ag₂S

a)

Yes, and LiNO₃formed a precipitate.

b)

Yes, and Ag₂S formed a precipitate.

c)

No, it is not a chemical reaction because no precipitate formed.

62.

What does (aq) mean when written in a chemical equation?

a)

substance in in a water solution

b)

the reaction is very slow

c)

the reaction is awesome!

d)

the substance is in a solid state.

63.

When heated, Copper (II) Carbonate yields Copper (II) Oxide and Carbon Dioxide. What type of reaction is this?

a)

Combustion

b)

Decomposition

c)

Double Replacement

d)

Single Replacement

e)

Synthesis

64.

What type of chemical reaction is shown in this equation?

Zn + 2HCl --> ZnCl₂ + H₂

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

65.

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

66.

Oxides:

$Mn_2O_7\rightarrow\$

a)

$2\ Mn_2O_7\ \rightarrow\ \ 7O_2\ +\ 4Mn$

b)

$\ Mn_2O_7\ \rightarrow\ \ O_2\ +\ 2Mn$

c)

$\ Mn_2O_7\ \rightarrow\ \ O_2\ +\ Mn$

67.

Oxides:

$FeO\rightarrow$

a)

$2FeO\ \rightarrow\ O_{2\ }+\ 2Fe$

b)

$FeO\rightarrow\ O\ +\ Fe$

c)

$2FeO\ \rightarrow\ O_2\ +\ Fe_2$

68.

Classify the reaction based on the reactants given:
$CH_4+O_2\rightarrow$

a)

Synthesis

b)

Decomposition

c)

Combustion

d)

Single Replacement

e)

Double Replacement

69.

Classify the reaction based on the reactants given:
$Na_2O\rightarrow$

a)

Synthesis

b)

Decomposition

c)

Combustion

d)

Single Replacement

e)

Double Replacement

70.

Nickel (II) Chlorate, Ni(ClO₃)_{2 ,}decomposes into

a)

Ni + ClO₃

b)

Ni₂ + ClO₃

c)

NiCl₂ + O₂

d)

NiCl + O

71.

A metal hydroxide will decompose into?

a)

metal oxide + water

b)

metal oxide + carbon dioxide

c)

metal chloride + oxygen

d)

metal oxide + oxygen

72.

A metal chlorate will decompose into?

a)

metal oxide + water

b)

metal oxide + carbon dioxide

c)

metal chloride + oxygen

d)

metal oxide + oxygen

73.

A metal carbonate will decompose into?

a)

metal oxide + water

b)

metal oxide + carbon dioxide

c)

metal chloride + oxygen

d)

metal oxide + oxygen

74.

Cs₂CO₃ will decompose into...

a)

Cs₂ + CO₃

b)

Cs + CO₃

c)

Cs₂O + CO₂

d)

Cs + CO₂

75.

What element is being Oxidized?

a)

N

b)

H

c)

O

d)

S

76.

Is calcium oxidized or reduced in the following reaction?
2 CaO--> 2 Ca + O₂

a)

Oxidized

b)

Reduced

77.

What is the oxidation number of chlorine in HClO?

a)

0

b)

-1

c)

+1

d)

+5

78.

Oxidation is the _________ of electrons.

a)

loss

b)

gain

c)

sharing

d)

transfer

79.

Reduction is the ___________ of electrons.

a)

loss

b)

gain

c)

sharing

d)

transfer

80.

What is the oxidation number of nitrogen in N₂?

a)

-3

b)

0

c)

+4

d)

-1

81.

The sum of the oxidation numbers in SCN^- is equivalent to

a)

0

b)

-1

c)

+1

d)

+3

82.

The sum of the oxidation numbers in Na₂CO₃ is equivalent to

a)

0

b)

-2

c)

+1

d)

-1

83.

What is the oxidation number of iodine in KIO₃?

a)

0

b)

-1

c)

+5

d)

+1

Writing and Predicting Equations

Total questions: 83

Worksheet time: 3hrs 1mins

Similar Resources on Wayground