Identification Of Oxidation And

Question 1

What is oxidation?

Answer 1

Oxidation is the process in which an atom, ion, or molecule loses electrons.

Question 2

What is reduction?

Answer 2

Reduction is the process in which an atom, ion, or molecule gains electrons.

Question 3

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

Answer 3

True

Question 4

What is the mnemonic used to remember oxidation and reduction?

Answer 4

‘OIL RIG’ which stands for ‘Oxidation Is Loss, Reduction Is Gain.’

Question 5

In terms of oxidation states, what happens to the oxidation state of an element during oxidation?

Answer 5

The oxidation state increases.

Question 6

In terms of oxidation states, what happens to the oxidation state of an element during reduction?

Answer 6

The oxidation state decreases.

Question 7

Fill in the blank: A substance that donates electrons is called a __________.

Answer 7

reducing agent

Question 8

Fill in the blank: A substance that accepts electrons is called an __________.

Answer 8

oxidizing agent

Question 9

What is a common example of an oxidation reaction?

Answer 9

Rusting of iron.

Question 10

What is a common example of a reduction reaction?

Answer 10

The conversion of iron(III) oxide to iron.

Question 11

True or False: Oxidation can occur without reduction.

Answer 11

False

Question 12

What is the role of oxygen in oxidation reactions?

Answer 12

Oxygen often acts as an oxidizing agent.

Question 13

What is the oxidation state of carbon in carbon dioxide (CO2)?

Answer 13

+4

Question 14

What is the oxidation state of sulfur in sulfuric acid (H2SO4)?

Answer 14

+6

Question 15

True or False: All redox reactions involve oxygen.

Answer 15

False

Question 16

What happens to the electrons during a redox reaction?

Answer 16

Electrons are transferred from one species to another.

Question 17

Which of the following is a characteristic of a reduction reaction? a) Loss of electrons b) Gain of electrons

Answer 17

b) Gain of electrons

Question 18

In electrochemistry, what is the anode?

Answer 18

The electrode where oxidation occurs.

Question 19

In electrochemistry, what is the cathode?

Answer 19

The electrode where reduction occurs.

Question 20

What is a half-reaction?

Answer 20

A reaction that shows either the oxidation or reduction process separately.

Question 21

Fill in the blank: In a redox reaction, the species being oxidized is ________.

Answer 21

losing electrons

Question 22

Fill in the blank: In a redox reaction, the species being reduced is ________.

Answer 22

gaining electrons

Question 23

What is the change in oxidation state for the reducing agent during a redox reaction?

Answer 23

The oxidation state decreases.

Question 24

What is the change in oxidation state for the oxidizing agent during a redox reaction?

Answer 24

The oxidation state increases.

Question 25

What does the term ‘redox’ stand for?

Answer 25

Reduction-Oxidation.

Question 26

True or False: An oxidizing agent is always a non-metal.

Answer 26

False

Question 27

What type of reaction involves the transfer of electrons between species?

Answer 27

Redox reaction.