Electrolysis

Question 1

What is electrolysis?

Answer 1

It is the breaking down of a substance using electricity. Causing it to decompose

Question 2

What is OILRIG

Answer 2

Oxidation
Is
Loss
Reduction
Is
Gain

Question 3

What are positive and negative ions called?

Answer 3

Positive ions are cation - move to the cathode

Negative ions are anions - move to anode

Question 4

What are half equations?

Answer 4

They show how the electrons are transferred during electrolysis .

Question 5

How do you set up an electrochemical cell?

Answer 5

You need a circuit , anode, cathode, electrolyte, a power source and wires that connect the electrodes

Question 6

How do you set up a electrolysis if the electrolyte is a solution?

Answer 6

1) get two inert electrodes
2) clean surface of electrodes
3) don’t touch the surfaces of the electrodes - could transfer grease
4) place electrodes into a beaker filled with electrolyte
5) connect using crocodile clips and wired, turn on power

Question 7

How do you set up electrolysis if the electrolyte is a molten ionic substance?

Answer 7

1) put the substance in a crucible
2) heat until the solid is molten - use fume cupboard
3) dip both electrodes (inert) into the electrolyte
4) connect the electrodes to a power supply using wires and clips ,