C2 Chemistry - Electrolysis Flashcards Preview

Science B2 C2 P2 > C2 Chemistry - Electrolysis > Flashcards

Flashcards in C2 Chemistry - Electrolysis Deck (12)
Loading flashcards...
1

what is electrolysis?

decomposition of a liquid using electricity

2

what are electrolytes

liquids which conduct electricity

3

what is the anode?

the positive electrode

4

what is the cathode?

the negative electrode

5

O
I
L

R
I
G
what does this mean?

oxidation is less
reduction is gain

6

what is reduction

its the gain of electrons

7

whats oxidation

the loss of electrons

8

what are half equations?

they show the reactions taking place at the electrodes

9

what must you make sure when doing a half equation?

the number of the electrons is the same for both half equations

10

what are the uses of electrolysis?
3 things

electroplating
production of hydrogen for fuel
production of oxygen for space craft

11

what is electroplating?

uses electrolysis to coat the surface of one metal with another metal

12

why is electroplating used?

to stop metals from rusting