Electrolysis C3.3 Flashcards
1
Q
What is electrolysis?
A
Using electricity to split ionic compounds
2
Q
Name four main reasons used for electrolysis
A
- Extracting metals
- Making chlorine gas
- Making hydrogen gas
- Making soap
3
Q
Why does a compound have to be Molten or dissolved first?
A
This is because their ions are then free to move and carry charge.
4
Q
What are dissolved or molten ionic compounds called ?
A
Electrolytes
5
Q
What is the negative electrode called?
A
Cathode
6
Q
What is the positive electrode called?
A
Anode
7
Q
What happens at the Cathode?
A
Metal ions are positively charged, so metals are produced at the cathode
8
Q
What happens at the Anode?
A
Oxygen is produced in the Anode
9
Q
What is oxidation?
A
happens when electrons are lost
10
Q
What is reduction ?
A
happens when electrons are gained
