Redox TEST Revision

Page 1

What you need to know:

Define oxidation-reduction (redox) reactions as electrons transfer processes

Define oxidising/reducing agents

Use rules for determining the oxidation number(state) of atoms

Use oxidation numbers to identify oxidized species / reduced species

Introduction to Reduction Half-reaction

Write Reduction / Oxidation Half-reactions and overall Redox equations

introduction to electrochemistry.

Explore electrochemical cells, redox reactions and their importance to corrosion, batteries and electrochemical industry.

Introduction to electrochemical cells, including galvanic and electrolytic cells

Investigate electrolytic cells, including metal plating and the purification of copper

Page 2

Oxidation

GAIN of oxygen (increased oxidation number)

LOSS of hydrogen

LOSS of electrons

Reduction

LOSS of oxygen (decrease oxidation number)

GAIN of hydrogen

GAIN of electrons

The substance that...

is oxidised:

loses electrons

causes another to gain electrons

hence, causes reduction

is reduced:

gains electrons

causes another to lose electrons

hence, causes oxidation