Question 1

Which of the following best describes a chemical reaction where two or more reactants combine to form a single product?

Accepted Answer

Combination

Question 2

What type of chemical reaction is represented by the following equation? $2 \mathrm{H}_2O_2 (aq) \rightarrow 2 \mathrm{H}_2O (l) + \mathrm{O}_2 (g)$

Accepted Answer

Decomposition

Question 3

Ibuprofen has the molecular formula $\mathrm{C}_{13}\mathrm{H}_{18}\mathrm{O}_2$. What is the balanced chemical equation for its combustion in oxygen?

Accepted Answer

$\mathrm{C}_{13}\mathrm{H}_{18}\mathrm{O}_2 + 17\mathrm{O}_2 \rightarrow 13\mathrm{CO}_2 + 9\mathrm{H}_2\mathrm{O}$

Question 4

Which type of reaction involves the transfer of electrons between reactants?

Accepted Answer

Redox

Question 5

Given the reaction $3 \mathrm{Mg} (s) + \mathrm{Fe}_2\mathrm{O}_3 (aq) \rightarrow 2 \mathrm{Fe} (s) + 3 \mathrm{MgO} (aq)$, what type of reaction is this?

Accepted Answer

Combustion

Question 6

Which of the following is a double displacement reaction?

Accepted Answer

$3 \mathrm{Ca(OH)}_2 (aq) + \mathrm{Al}_2(\mathrm{SO}_4)_3 (aq) \rightarrow 3 \mathrm{CaSO}_4 (s) + 2 \mathrm{Al(OH)}_3 (s)$

Question 7

What is the product of the single displacement reaction: $\mathrm{Zn} (s) + 2 \mathrm{HCl} (aq) \rightarrow$ ?

Accepted Answer

$\mathrm{ZnCl}_2 (aq) + \mathrm{H}_2 (g)$

Question 8

Which reaction type is represented by $2 \mathrm{KClO}_3 (s) \rightarrow 2 \mathrm{KCl} (s) + 3 \mathrm{O}_2 (g)$?

Accepted Answer

Decomposition

Question 9

In the reaction $3 \mathrm{H}_2 (g) + \mathrm{N}_2 (g) \rightarrow 2 \mathrm{NH}_3 (g)$, which type of reaction is occurring?

Accepted Answer

Combustion

Question 10

Which of the following is a correct balanced equation for the combustion of methane ($\mathrm{CH}_4$)?

Accepted Answer

$\mathrm{CH}_4 + 2 \mathrm{O}_2 \rightarrow \mathrm{CO}_2 + 2 \mathrm{H}_2O$

Question 11

A reaction where a single element replaces another element in a compound is called:

Accepted Answer

Single Displacement

Question 12

Which of the following reactions is a redox reaction?

Accepted Answer

$2 \mathrm{Na} (s) + \mathrm{Cl}_2 (g) \rightarrow 2 \mathrm{NaCl} (s)$

Question 13

Which of the following is NOT a characteristic of a combustion reaction?

Accepted Answer

Water is always a product

Question 14

What is the type of reaction for $2 \mathrm{Na} (s) + 2 \mathrm{H}_2O (l) \rightarrow 2 \mathrm{NaOH} (aq) + \mathrm{H}_2 (g)$?

Accepted Answer

Single Displacement

Question 15

Which of the following is a decomposition reaction?

Accepted Answer

$2 \mathrm{H}_2O_2 (aq) \rightarrow 2 \mathrm{H}_2O (l) + \mathrm{O}_2 (g)$

Question 16

Which of the following best describes a double displacement reaction?

Accepted Answer

Two compounds exchange ions to form two new compounds

Question 17

In a redox reaction, what is transferred between reactants?

Accepted Answer

Electrons

Question 18

Which of the following is a correct example of a combination reaction?

Accepted Answer

$2 \mathrm{Na} (s) + \mathrm{Cl}_2 (g) \rightarrow 2 \mathrm{NaCl} (s)$

Question 19

Which of the following reactions is most likely to occur in the human body during cellular respiration?

Accepted Answer

$\mathrm{C}_6\mathrm{H}_{12}\mathrm{O}_6 + 6 \mathrm{O}_2 \rightarrow 6 \mathrm{CO}_2 + 6 \mathrm{H}_2O$

Types of Chemical Reactions: Classification, Examples, and Practice Problems

Study Guide - Practice Questions

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