1.7 Oxidation, Reduction, Redox

Question 1

What is oxidation

Answer 1

Gain of oxygen
Loss of electrons
Loss of Hydrogen

Question 2

What is reduction

Answer 2

Loss of Oxygen
Gain of electrons
Gain of hydrogen

Question 3

What is the oxidation state of an element

Answer 3

0

Question 4

What is the oxidation state of a neutral compound

Answer 4

0

Question 5

What is the oxidation state of H

Answer 5

+1

Question 6

What si the oxidation state of Oxygen

Answer 6

-2

Question 7

What is the oxidation state of the halogens

Answer 7

-1

Question 8

What is the oxidation state of the Group 1 metals

(Alkali metals)

Answer 8

+1

Question 9

What is an oxidising agent

Answer 9

Accepts electrons from the species that is being oxidised
It will gain electrons, and is therefore itself being reduced

Question 10

What is an reducing agent

Answer 10

Donates electrons to the species being reduced
It will lose electrons, and is terefore itself being oxidised

Question 11

What happens to the oxidation number wen something is being reduced / oxidised

Answer 11

reduced - the oxidation no. decreases
oxidised - the oxidation no. increases

Question 12

How do you balance half equations

Answer 12

• Balance everything (except O and H)
• Balance using H20 and H+ ions
• Balance the electrons

Question 13

What is the oxidation no. of Flourine

Answer 13

-1

Question 14

How to tell the oxidation no. of non -metals

Answer 14

usually in the name
(manganese IV oxide has oxidation Mn+4)