C6 - Electrolysis

Question 1

Electrolysis

Answer 1

• Splits up Ionic Compounds, using electric current
• Positive Ions move to the Negative end
• Negative Ions move to the Positive end

Question 2

Electrolyte

Answer 2

• Dissolved Ionic Compound

Question 3

Cathode

Answer 3

• Negative Electrode

- Positive Ions move to the Cathode

Question 4

Anode

Answer 4

• Positive Electrode

- Negative Ions move to the Anode

Question 5

Reduction Reaction

Answer 5

• Where Ions gain electrons to form atoms (no charge)

- E.g. +2 charge + -2 electron —> atom (no charge)

Question 6

Oxidation Reaction

Answer 6

• Where Ions loose electrons to form atoms (no charge)

- E.g. -1 charge - -1 electron —> atom (no charge)

Question 7

Why we use Electrolysis

Answer 7

• If a metal is too reactive to be reduced with Carbon

Question 8

Disadvantages of Electrolysis

Answer 8

• Extremely expensive and requires lots of energy to melt the ore and produce the required current