Free Printable Reactions Review

1.

4Si + S₈ --> 2Si₂S₄

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

2.

3Ca + 2AlCl₃ --> 3CaCl₂+2Al

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

3.

3KOH + H₃PO₄ --> K₃PO₄+3H₂O

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

4.

2Pb(NO₃)₂ --> 2PbO + 4NO₂ + O₂

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Combustion

5.

Which reaction type is the following: C₅H₁₀O₄ + O₂ --> CO₂ + H₂O

a)

Decomposition

b)

Single Replacement

c)

Combustion

d)

Double Replacement

6.

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

7.

When balancing equations a ____ can be placed to the left of a formula of a substance to make the equations balanced

a)

charge

b)

subscript

c)

random number

d)

coefficient

8.

What coefficient should be used to make the following equation balanced?
N₂+O₂--> _NO

a)

1

b)

2

c)

3

d)

4

9.

Balance this equation:
__Li + __Cl₂ -> __LiCl

a)

2Li + Cl₂ -> 4LiCl₂

b)

2Li + Cl₂ -> LiCl₂

c)

2Li + Cl₂ -> 2LiCl

10.

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

11.

The law of conservation of mass states

a)

chemical reactions create new atoms

b)

atoms cannot be created or destroyed

c)

reactants vanish once a reaction takes place

d)

products appear when a reaction takes place

12.

Which are the reactants in the following reaction?

2Mg + O₂ ---> 2MgO

a)

2MgO

b)

2Mg +O

c)

2Mg + O₂

13.

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)

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

14.

Translate the word equation below.

Aluminum and Hydrochloric Acid (HCl) react to form Aluminum Chloride and Hydrogen

a)

$Al\ +\ HCl\ \rightarrow\ AlCl_3\ +\ H_{ }$

b)

$Al\ +\ HCl\ \rightarrow\ AlCl\ +\ H_2$

c)

$Al\ +\ HCl\ \rightarrow\ AlCl_3\ +\ H_2$

d)

$Al\ +\ HCl\ \rightarrow\ AlCl\ +\ H$

15.

Select the correct balanced equation for when sodium reacts with chlorine to produce sodium chloride.

a)

NaCl(s) → Cl(g) + Na(s)

b)

Na(s) + CO₂(g) → NaCO₂(s)

c)

2Na(s) + Cl₂(g) → 2NaCl(s)

d)

Na(s) + Cl(g) → NaCl

16.

What would be the proper chemical formula for combining Al³⁺ and Cl^- :

a)

AlCl₃

b)

Al₃Cl

c)

AlCl

d)

Al₃Cl₃

17.

The chemical formula for diphosphorous pentoxide is

a)

P₅O₂

b)

2P 5O

c)

5P 2O

d)

P₂O₅

18.

Test for hydrogen (H₂)

a)

turns damp, red litmus paper blue

b)

turns limewater milky

c)

'pops' with a lighted splint

d)

damp blue litmus paper turns red, then bleach to white

e)

relights a glowing splint

19.

Test for oxygen (O₂)

a)

turns damp, red litmus paper blue

b)

turns limewater milky

c)

turns acidified aqueous potassium manganate(VII) from purple to colourless

d)

damp blue litmus paper turns red, then bleach to white

e)

relights a glowing splint

20.

State whether the following compound is soluble or insoluble.

CaCO₃(calcium carbonate)

a)

soluble

b)

insoluble

21.

State whether the following compound is soluble or insoluble.

AgI. (silver iodide)

a)

Soluble

b)

Insoluble

22.

State whether the following compound is soluble or insoluble.

AgC₂H₃O_2.(silver acetate)

a)

Soluble

b)

Insoluble

23.

State whether the following compound is soluble or insoluble.

NiCl_2.(nickel chloride)

a)

Soluble

b)

Insoluble

24.

How many nitrogen atoms in (NH₄)₂CrO₄

a)

1

b)

2

c)

8

d)

16

25.

How many oxygen atom are in Al₂(SO₄)₃

a)

4

b)

12

c)

7

d)

24

Reactions Review

Total questions: 25

Worksheet time: 22mins

Similar Resources on Wayground