Electrolysis Flashcards
1
Q
Electrolysis
A
Splitting up with electricity
2
Q
Why must the electrolyte be molten or a dissolved ionic compound?
A
So ions are free to move and can carry electric current
3
Q
What does electrolysis of molten ionic solids form?
A
Elements
4
Q
Why should electrodes be made of an inert material?
A
So they don’t react with electrolyte
5
Q
Cathode
A
Negative electrode
6
Q
Anode
A
Positive electrode
7
Q
What happens at the cathode?
A
Positive metal ions are reduced
8
Q
What happens at the anode?
A
Negative non-metal ions are oxidised
9
Q
How can metals be extracted from their ores?
A
Electrolysis
10
Q
Half equations
A
Show reactions at electrodes (show ions/atoms gaining/losing electrons)
