Redox

Question 1

What is meant by the term oxidation number?

Answer 1

The number of electrons involved in bonding to a different element.

Question 2

What is the oxidation number of elements?

Answer 2

0

Question 3

What is the oxidation number of O2?

Answer 3

0

Question 4

Where does the sign go in an oxidation number?

Answer 4

Before the number

Question 5

What is the oxidation number of O when combined in a compound?

Answer 5

-2

Question 6

What is the oxidation number of H when combined in a compound?

Answer 6

+1

Question 7

What is the oxidation number of F when combined in a compound?

Answer 7

-1

Question 8

What is the oxidation number of Group 1 ions?

Answer 8

+1

Question 9

What is the oxidation number of Group 2 ions?

Answer 9

+2

Question 10

What is the oxidation number for halogens?

Answer 10

-1

Question 11

What is the oxidation number for H in hydrides?

Answer 11

-1

Question 12

What is the oxidation number for O in peroxides?

Answer 12

-1

Question 13

What is the oxidation number of O when bonded to F?

Answer 13

+2

Question 14

What is the sum of oxidation numbers equal to?

Answer 14

The total charge

Question 15

What do redox reactions involve?

Answer 15

Oxidation and reduction

Question 16

What is reduction?

Answer 16

This is the gain of electrons.

Question 17

What is oxidation?

Answer 17

The loss of electrons.

Question 18

What happens to the oxidation number in reduction?

Answer 18

It decreases.

Question 19

What happens to the oxidation number in oxidation?

Answer 19

It increases.

Question 20

What is produced in a redox reaction of metals and acids?

Answer 20

A salt and hydrogen

Question 21

What is reduced in the redox reaction of metals and acids?

Answer 21

Hydrogen

Question 22

What is oxidised in the redox reaction of metals and acids?

Answer 22

The metal