Types Of Reactions

Question 1

What is an oxidation reaction?

Answer 1

An oxidation reaction is a chemical process in which a substance loses electrons.

Question 2

What is a reduction reaction?

Answer 2

A reduction reaction is a chemical process in which a substance gains electrons.

Question 3

True or False: In a redox reaction, oxidation and reduction occur simultaneously.

Answer 3

True

Question 4

Fill in the blank: In a redox reaction, the substance that is oxidized is called the __________.

Answer 4

reducing agent

Question 5

Fill in the blank: In a redox reaction, the substance that is reduced is called the __________.

Answer 5

oxidizing agent

Question 6

What is the oxidation state of oxygen in most compounds?

Answer 6

-2

Question 7

What is the oxidation state of hydrogen in most compounds?

Answer 7

+1

Question 8

Define the term ‘redox reaction’.

Answer 8

A redox reaction is a chemical reaction involving the transfer of electrons between two species.

Question 9

Which element is often used as a standard for measuring reduction potential?

Answer 9

Hydrogen

Question 10

True or False: Oxidation can occur without reduction.

Answer 10

False

Question 11

What happens to the oxidation state of a substance that is oxidized?

Answer 11

The oxidation state increases.

Question 12

What happens to the oxidation state of a substance that is reduced?

Answer 12

The oxidation state decreases.

Question 13

Multiple Choice: Which of the following is a common oxidizing agent? A) NaCl B) H2O C) KMnO4 D) CH4

Answer 13

C) KMnO4

Question 14

Multiple Choice: Which of the following is a common reducing agent? A) O2 B) H2 C) Cl2 D) H2O

Answer 14

B) H2

Question 15

What is the role of electrons in redox reactions?

Answer 15

Electrons are transferred between substances, leading to oxidation and reduction.

Question 16

True or False: The total number of electrons is conserved in a redox reaction.

Answer 16

True

Question 17

What is the half-reaction method?

Answer 17

A method used to balance redox reactions by separating the oxidation and reduction processes.

Question 18

Define ‘oxidation number’.

Answer 18

An oxidation number is a value that represents the total number of electrons an atom either gains or loses in a chemical bond.

Question 19

Fill in the blank: In organic chemistry, the addition of __________ typically indicates a reduction reaction.

Answer 19

hydrogen

Question 20

Fill in the blank: The removal of __________ usually indicates an oxidation reaction.

Answer 20

hydrogen or electrons

Question 21

What is the relationship between oxidation and energy?

Answer 21

Oxidation reactions often release energy.

Question 22

What is corrosion in terms of redox reactions?

Answer 22

Corrosion is the process of metal oxidation, often leading to deterioration.

Question 23

True or False: Redox reactions are only relevant in organic chemistry.

Answer 23

False

Question 24

What is electrochemistry?

Answer 24

Electrochemistry is the study of chemical processes that cause electrons to move.

Question 25

Multiple Choice: What is the primary function of a battery? A) Store heat B) Store chemical energy C) Store light energy D) Store mechanical energy

Answer 25

B) Store chemical energy

Question 26

What is a common application of redox reactions in everyday life?

Answer 26

Batteries and fuel cells.