Free Printable Understanding Chemical Reaction Types Quiz (5)

1.

Which of the following is an example of a synthesis reaction?

a)

$2H_2O \rightarrow 2H_2 + O_2$

b)

$2H_2 + O_2 \rightarrow 2H_2O$

c)

$Zn + CuSO_4 \rightarrow ZnSO_4 + Cu$

d)

$CaCO_3 \rightarrow CaO + CO_2$

2.

What type of reaction is represented by the equation $2KClO_3 \rightarrow 2KCl + 3O_2$ ?

a)

Synthesis

b)

Decomposition

c)

Displacement

d)

Combustion

3.

Which of the following best describes a displacement reaction?

a)

Two elements combine to form a compound.

b)

A compound breaks down into simpler substances.

c)

An element replaces another element in a compound.

d)

Two compounds exchange ions.

4.

Which of the following is a balanced equation for a synthesis reaction?

a)

$2Na + Cl_2 \rightarrow 2NaCl$

b)

$2H_2O \rightarrow 2H_2 + O_2$

c)

$AgNO_3 + NaCl \rightarrow AgCl + NaNO_3$

d)

$CaCO_3 \rightarrow CaO + CO_2$

5.

Identify the type of reaction: $Zn + 2HCl \rightarrow ZnCl_2 + H_2$

a)

Synthesis

b)

Decomposition

c)

Displacement

d)

Neutralisation

6.

Which of the following is an example of a decomposition reaction?

a)

$2Mg + O_2 \rightarrow 2MgO$

b)

$2KClO_3 \rightarrow 2KCl + 3O_2$

c)

$Fe + CuSO_4 \rightarrow FeSO_4 + Cu$

d)

$H_2 + Cl_2 \rightarrow 2HCl$

7.

What is the correct balanced equation for the decomposition of water?

a)

$H_2O \rightarrow H_2 + O_2$

b)

$2H_2O \rightarrow 2H_2 + O_2$

c)

$2H_2O \rightarrow H_2 + 2O_2$

d)

$H_2O \rightarrow 2H_2 + O_2$

8.

Which of the following reactions is a real-life example of a synthesis reaction?

a)

Rusting of iron: $4Fe + 3O_2 \rightarrow 2Fe_2O_3$

b)

Electrolysis of water: $2H_2O \rightarrow 2H_2 + O_2$

c)

Heating calcium carbonate: $CaCO_3 \rightarrow CaO + CO_2$

d)

Reaction of silver nitrate with sodium chloride: $AgNO_3 + NaCl \rightarrow AgCl + NaNO_3$

9.

Which of the following best represents a single displacement reaction?

a)

$2Na + Cl_2 \rightarrow 2NaCl$

b)

$2H_2O \rightarrow 2H_2 + O_2$

c)

$Zn + CuSO_4 \rightarrow ZnSO_4 + Cu$

d)

$AgNO_3 + NaCl \rightarrow AgCl + NaNO_3$

10.

What type of reaction is the following: $2H_2O_2 \rightarrow 2H_2O + O_2$ ?

a)

Synthesis

b)

Decomposition

c)

Displacement

d)

Neutralisation

11.

Which of the following is NOT a synthesis reaction?

a)

$N_2 + 3H_2 \rightarrow 2NH_3$

b)

$2K + Cl_2 \rightarrow 2KCl$

c)

$2H_2O \rightarrow 2H_2 + O_2$

d)

$C + O_2 \rightarrow CO_2$

12.

Which reaction shows the rearrangement of atoms in a decomposition reaction?

a)

$2H_2 + O_2 \rightarrow 2H_2O$

b)

$2KClO_3 \rightarrow 2KCl + 3O_2$

c)

$Zn + 2HCl \rightarrow ZnCl_2 + H_2$

d)

$AgNO_3 + NaCl \rightarrow AgCl + NaNO_3$

13.

Which of the following is a real-life application of a decomposition reaction?

a)

Photosynthesis in plants

b)

Electrolysis of water to produce hydrogen fuel

c)

Formation of table salt from sodium and chlorine

d)

Rusting of iron

14.

Which of the following equations is correctly balanced?

a)

$H_2 + O_2 \rightarrow H_2O$

b)

$2H_2 + O_2 \rightarrow 2H_2O$

c)

$H_2 + 2O_2 \rightarrow 2H_2O$

d)

$2H_2 + 2O_2 \rightarrow 2H_2O$

15.

Which of the following is an example of a double displacement reaction?

a)

$Zn + CuSO_4 \rightarrow ZnSO_4 + Cu$

b)

$AgNO_3 + NaCl \rightarrow AgCl + NaNO_3$

c)

$2H_2 + O_2 \rightarrow 2H_2O$

d)

$2KClO_3 \rightarrow 2KCl + 3O_2$

16.

Which of the following best describes what happens in a synthesis reaction?

a)

A compound breaks down into simpler substances.

b)

Two or more substances combine to form a new compound.

c)

An element replaces another element in a compound.

d)

Two compounds exchange ions.

17.

Which of the following is a real-life example of a displacement reaction?

a)

Heating limestone to produce lime

b)

Iron nail placed in copper sulphate solution forming copper

c)

Burning hydrogen in oxygen to form water

d)

Photosynthesis in plants

18.

Which of the following is NOT a decomposition reaction?

a)

$2H_2O_2 \rightarrow 2H_2O + O_2$

b)

$CaCO_3 \rightarrow CaO + CO_2$

c)

$2Na + Cl_2 \rightarrow 2NaCl$

d)

$2KClO_3 \rightarrow 2KCl + 3O_2$

19.

Which of the following best describes the rearrangement of atoms in a displacement reaction?

a)

Atoms of two elements combine to form a compound.

b)

Atoms in a compound are replaced by atoms of another element.

c)

A compound breaks down into its elements.

d)

Two compounds exchange ions.

20.

Which of the following is a real-life application of a synthesis reaction?

a)

Electrolysis of water to produce hydrogen and oxygen

b)

Formation of ammonia for fertilisers: $N_2 + 3H_2 \rightarrow 2NH_3$

c)

Heating calcium carbonate to produce lime

d)

Iron nail placed in copper sulphate solution

Understanding Chemical Reaction Types Quiz (5)

Total questions: 20

Worksheet time: 10mins

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