Free Printable Mini Chemical Rxns and Balancing

Worksheets

Mini Chemical Rxns and Balancing

Total questions: 37

Worksheet time: 59mins

Name

Class

Date

Balance this reaction: ____ Na₃PO₄ + ____ KOH ---> ____ NaOH + ____ K₃PO₄

1,3,3,1

1,3,2,1

2,3,3,1

1,1,3,1

Balancing this reaction: ____ CH₄ + ____ O₂ ---> ____ CO₂ + ____ H₂O

2,1,3,1

1,2,1,2

1,2,2,1

2,1,1,2

Balance this reaction: ____ NaF + ____ Br₂ ---> ____ NaBr + ____ F₂

3,1,2,1

1,2,3,4

2,1,2,1

1,2,1,2

Balance this reaction: ____ AlBr₃ + ____ K₂SO₄ ---> ____ KBr + ____ Al₂(SO₄)₃

1,1,1,1

2,3,6,1

2,6,1,1

3,1,2,2

Balance this reaction: ____ NH₃ + ____ H₂SO₄ ---> ____ (NH₄)₂SO₄

2,1,1

2,1,2

1,2,2

2,2,1

Balance this reaction: ____ GaF₃ + ____ Cs ---> ____ CsF + ____ Ga

1,1,3,1

1,2,3,1

2,3,3,1

1,3,3,1

Balance this reaction: ____ BaS + ____ PtF₂ ---> ____ BaF₂ + ____ PtS

1,1,1,1

1,2,1,1

1,1,1,2

2,1,1,1

Balance this reaction: ____ HCN + ____ CuSO₄ ---->____ H₂SO₄ + ____ Cu(CN)₂

2,1,1,2

2,1,1,1

1,2,2,1

1,2,1,1

Balance this reaction: ____ RbNO₃ + ____ BeF₂ ----> ____ Be(NO₃)₂ + ____ RbF

1,1,1,1

1,2,1,1

2,1,1,2

2,1,2,1

10.

___C₃H₈ +___O₂ --> ___CO₂ + ___H₂O

1,5,3,4

2,10,6,8

already balanced

1,5,5,4

11.

4Si + S₈ --> 2Si₂S₄

Synthesis

Decomposition

Single replacement

Double replacement

12.

3Ca + 2AlCl₃ --> 3CaCl₂+2Al

Synthesis

Decomposition

Single replacement

Double replacement

13.

3KOH + H₃PO₄ --> K₃PO₄+3H₂O

Synthesis

Decomposition

Single displacement

Double displacement

14.

2Pb(NO₃)₂ --> 2PbO + 4NO₂ + O₂

Synthesis

Decomposition

Single replacement

Combustion

15.

What are the correct products for this DR reaction?
NaOH + Fe(NO₃)₃ -->

NaFe + OH(NO₃)₃

Na(NO₃)₃ + Fe(OH)

impossible to tell

NaNO₃ + Fe(OH)₃

16.

Which of the following equations represents the balanced synthesis reaction of iron (III) and oxygen?

Fe + 3 O₂ → Fe₂O₃

3 Fe + 3 O₂ → 2 Fe₂O₃

2 Fe + O₂ → Fe₂O₃

4 Fe + 3 O₂ → 2 Fe₂O₃

17.

If an element is diatomic it should have a subscript of___

2, always

2, only when it is by itself

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

18.

The symbol for a substance dissolved in water is

(s)

(l)

(g)

(aq)

19.

To predict if a single replacement reaction will take place you should use a(n)

Activity series

Solubility Chart

Periodic Table

Metal chart

20.

Which of the following reactions will NOT take place spontaneously in the direction written?

Cu + HCl --->

Ca + Pb(NO₃)₂--->

Ag + AuCl₃--->

Zn + HNO₃--->

21.

Use the activity series to write a balanced chemical equation for the following single replacement reaction:

Ag(s) + KNO₃(aq) --- >

Ag(s) + KNO₃(aq) --- > Ag + K + NO₃

Ag(s) + KNO₃(aq) --- > AgK + NO₃

Ag(s) + KNO₃(aq) --- > AgKNO₃

No reaction takes place because silver is less reactive than potassium.

22.

In a combustion reaction, one of the reactants is _____.

hydrogen

nitrogen

oxygen

a metal

23.

The equation H₃PO₄+ 3KOH ----> K₃PO₄+ 3H₂O is an example of which type of reaction?

double-replacement

decomposition

synthesis

single-replacement

24.

The equation 2C₃H₇OH + 9O₂ -----> 6CO₂ + 8H₂O is an example of which type of reaction?

combustion

double-replacement

single-replacement

decomposition

25.

Which of the following is true of the law of conservation of mass?

The same number and type of each atom will always be present before and after a chemical reaction takes place.

Some of the atoms present before the reaction will always be lost during a chemical reaction.

Some of the atoms will always be changed into a different type of atom by a chemical reaction.

During a chemical reaction, atoms will always be combined into much larger molecules.

26.

The blue numbers in the image below represent ________

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

coefficients

subscripts

none of the answers are correct

27.

What type of reaction is illustrated below?
2HI --> H₂+ I₂

synthesis

decomposition

single replacement

double replacement

28.

What type of reaction is this?

Na₃PO₄ + KOH --->NaOH + K₃PO₄

Synthesis

Decomposition

Double Replacement

Combustion

29.

What type of reaction is this ?

CH₄ + O₂ ---> CO₂ + H₂O

Synthesis

Decomposition

Double Replacement

Combustion

30.

Identify this reaction:

NaF + Br₂ ---> NaBr + F₂

Synthesis

Decomposition

Single Replacement

Double Replacement

Combustion

31.

Identify this reaction:

AlBr₃ + K₂SO₄ ---> KBr + Al₂(SO₄)₃

Synthesis

Decomposition

Single Replacement

Double Replacement

32.

Identify this reaction:

NH₃ + H₂SO₄ ---> (NH₄)₂SO₄

Synthesis

Decomposition

Single Replacement

Double Replacement

33.

Identify this reaction:

C₃H₈ +_O₂ --> CO₂ + H₂O

Synthesis

Single Replacement

Double Replacement

Combustion

34.

Identify this reaction:

GaF₃ + _ Cs ---> CsF + Ga

Combustion

Single Replacement

Double Replacement

Decomposition

35.

Identify this reaction:

BaS + PtF₂ ---> BaF₂ + PtS

Combustion

Double Replacement

Decomposition

Single Replacement

36.

type of chemical reaction where two compounds react, and the positive ions (cation) and the negative ions (anion) of the two reactants switch places, forming two new compounds or products

Double Displacement

Single Displacement

Synthesis

Decomposition

37.

What is the symbol which is used in reversible reactions?

→

⇌

100 %

Mini Chemical Rxns and Balancing

Total questions: 37

Worksheet time: 59mins

Similar Resources on Wayground