Redox

Question 1

What is oxidation?

Answer 1

Loss of electrons

Question 2

What is reduction?

Answer 2

Gain of electrons

Question 3

What happens to oxidation number when oxidation occurs?

Answer 3

Increases

Question 4

What happens to oxidation number when reduction occurs?

Answer 4

Decreases

Question 5

What is the oxidation number for uncombined elements?

Answer 5

0

Question 6

What does the oxidation number of elements add up to in a compound?

Answer 6

0

Question 7

What is the oxidation number of a monoatomic ion equal to?

Answer 7

Ionic charge

Question 8

What is the oxidation number of a polyatomic ion equal to?

Answer 8

The charge of the ion

Question 9

What is the oxidation of group 1 metals?

Answer 9

+1

Question 10

What is the oxidation number of group 2 metals?

Answer 10

+2

Question 11

What is the oxidation number of Aluminium?

Answer 11

+3

Question 12

What is the oxidation number of Hydrogen?

Answer 12

+1

Question 13

Which case is hydrogen not +1?

Answer 13

In NaH where it is -1.

Question 14

Oxidation number of F?

Answer 14

-1

Question 15

Oxidation number of Cl, I and Br?

Answer 15

-1

Question 16

When does the oxidation number of Cl, I and Br vary?

Answer 16

In compounds with Oxygen and fluorine.

Question 17

Oxidation number of O?

Answer 17

-2

Question 18

When does the oxidation number of O vary?

Answer 18

In peroxides where it is -1.

Question 19

What are reducing agents?

Answer 19

Electron donors

Question 20

What are oxidation agents?

Answer 20

Electron acceptors