Q: Which equation represents a decomposition reaction?

$$2 \text{H}_2\text{O}_2 (aq) \rightarrow 2 \text{H}_2\text{O} (l) + \text{O}_2 (g)$$

Q: What is the correct balanced equation for the combustion of butadiene ($$\text{C}_4\text{H}_6) in $$oxygen?

$$2 \text{C}_4\text{H}_6 + 11 \text{O}_2 \rightarrow 8 \text{CO}_2 + 6 \text{H}_2\text{O}$$

Q: Which of the following is a double displacement reaction?

$$\text{Na}_2\text{SO}_4 (aq) + \text{BaCl}_2 (aq) \rightarrow 2 \text{NaCl} (aq) + \text{BaSO}_4 (s)$$

Q: Which of the following reactions is an example of a redox reaction?

$$\text{Zn} (s) + 2 \text{HCl} (aq) \rightarrow \text{ZnCl}_2 (aq) + \text{H}_2 (g)$$

Q: Which of the following reactions is a single displacement reaction?

$$3 \text{Hg} (l) + \text{N}_2 (g) \rightarrow 2 \text{NH}_3 (g)$$

Q: Which of the following is the correct balanced equation for the decomposition of potassium chlorate?

$$2 \text{KClO}_3 (s) \rightarrow 2 \text{KCl} (s) + 3 \text{O}_2 (g)$$

Question 1

Which of the following best describes a chemical reaction?

Accepted Answer

A process where reactants are broken down and reassembled into new products.

Question 2

Which equation represents a decomposition reaction?

Accepted Answer

$$2 	ext{H}_2	ext{O}_2 (aq) ightarrow 2 	ext{H}_2	ext{O} (l) + 	ext{O}_2 (g)$$

Question 3

Which type of reaction is illustrated by the following equation? $$3 	ext{Mg} (s) + 	ext{Fe}_2	ext{O}_3 (s) ightarrow 2 	ext{Fe} (s) + 3 	ext{MgO} (s)$$

Accepted Answer

Single Displacement

Question 4

What is the correct balanced equation for the combustion of butadiene ($$	ext{C}_4	ext{H}_6) in $$oxygen?

Accepted Answer

$$2 	ext{C}_4	ext{H}_6 + 11 	ext{O}_2 ightarrow 8 	ext{CO}_2 + 6 	ext{H}_2	ext{O}$$

Question 5

Which of the following is a double displacement reaction?

Accepted Answer

$$	ext{Na}_2	ext{SO}_4 (aq) + 	ext{BaCl}_2 (aq) ightarrow 2 	ext{NaCl} (aq) + 	ext{BaSO}_4 (s)$$

Question 6

A reaction where two or more substances combine to form a single product is called:

Accepted Answer

Combination reaction

Question 7

Which of the following reactions is an example of a redox reaction?

Accepted Answer

$$	ext{Zn} (s) + 2 	ext{HCl} (aq) ightarrow 	ext{ZnCl}_2 (aq) + 	ext{H}_2 (g)$$

Question 8

Given the reaction $$3 	ext{Ca(OH)}_2 (aq) + 2 	ext{Al}_2(	ext{SO}_4)_3 (aq) ightarrow 3 	ext{CaSO}_4 (s) + 2 	ext{Al(OH)}_3 (s)$$, what type of reaction is this?

Accepted Answer

Double Displacement

Question 9

Which of the following best describes a combustion reaction?

Accepted Answer

A reaction where a substance reacts with oxygen to produce energy, usually in the form of heat and light.

Question 10

In the reaction $$2 	ext{H}_2 (g) + 	ext{O}_2 (g) ightarrow 2 	ext{H}_2	ext{O} (l)$$, which element is being reduced?

Accepted Answer

Oxygen

Question 11

Which of the following reactions is a single displacement reaction?

Accepted Answer

$$3 	ext{Hg} (l) + 	ext{N}_2 (g) ightarrow 2 	ext{NH}_3 (g)$$

Question 12

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

Accepted Answer

Two or more reactants combine to form a single product.

Question 13

Which of the following is the correct balanced equation for the decomposition of potassium chlorate?

Accepted Answer

$$2 	ext{KClO}_3 (s) ightarrow 2 	ext{KCl} (s) + 3 	ext{O}_2 (g)$$

Question 14

A student mixes solutions of silver nitrate and sodium chloride. A white precipitate forms. What type of reaction is this?

Accepted Answer

Double Displacement

Question 15

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

Accepted Answer

Burning gasoline in a car engine

Question 16

Which of the following best describes a single displacement reaction?

Accepted Answer

An element reacts with a compound and displaces another element from it.

Question 17

Which of the following is the correct balanced equation for the reaction of magnesium with oxygen?

Accepted Answer

$$2 	ext{Mg} (s) + 	ext{O}_2 (g) ightarrow 2 	ext{MgO} (s)$$

Question 18

Which of the following reactions is a combination reaction?

Accepted Answer

$$2 	ext{H}_2 (g) + 	ext{O}_2 (g) ightarrow 2 	ext{H}_2	ext{O} (l)$$

Types of Chemical Reactions: Classification and Examples

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