Redox and standard electrode potential

Question 1

Oxidation is..

Answer 1

Loss of electrons / oxidation state becomes more positive

Question 2

Reduction is..

Answer 2

Gain of electrons / oxidation states becomes more negative

Question 3

Oxidation states:
1 - Elements
2 - Group 1 metals
3 - Group 2 metals
4 - Hydrogen 
5 - Hydrogen in metal hydrides
6 - Fluorine
7 - Oxygen
8 - Oxygen in peroxides
9 - Halogens in metal halogens

Answer 3

1 - 0
2 - 1
3 - 2
4 - 1
5 - -1
6 - -1
7 - -2
8 - -1
9 - -1

Question 4

Define standard electrode potential

Answer 4

The potential difference when any half-cell is connected to the standard hydrogen electrode under standard conditions