Electrolysis GCSE Chemistry AQA (higher)

C2.6 in the AQA revision guide

This quiz has 30 questions

?
What does electrolysis do?
decomposses ionic substances into elements
1 of 33
What is the name of the solution of ions?
electrolyte
2 of 33
What is the name of the two rods that make contact with the solution of ions?
electrodes
3 of 33
When are ions free to move?
When they are molten or dissolved in liquids
4 of 33
What ions are attracted to the negative rod?
positive ions
5 of 33
What may be formed at the negative rod if the ions are dissolved in water?
hydrogen
6 of 33
What ions are attracted to the positive rod?
negative ions
7 of 33
What happens at the positive rod?
Negative ions lose their charge and become non-metallic elements
8 of 33
What else can be formed at the negative rod?
metals
9 of 33
What is losing electrons called?
oxidation
10 of 33
what is gaining electrons called?
reduction
11 of 33
Positively charged ions.........electrons at the negative rod.
gain
12 of 33
Negatively charged ions................ electrons at the positive rod.
lose
13 of 33
Why are ions of metals always reduced in electrolysis?
All metals form positive ions
14 of 33
What is the anode?
The positive rod
15 of 33
What is the cathode?
the negative rod
16 of 33
What is brine?
A solution of Sodium Choloride
17 of 33
What is produced at the anode?
Chlorine
18 of 33
What is produced at the cathode?
Hydrogen
19 of 33
One of the ions left in the solution is hydroxide. What is the other ion left in the solution?
Sodium
20 of 33
Give two uses for the ions in the solution.
Bleach, Soap
21 of 33
Give two uses for Chlorine.
Bleach, drinking water
22 of 33
Give two uses for hydrogen
making margarine and hydrochloric acid.
23 of 33
Why is it necessary for copper wires to be very pure?
So it is a good conductor
24 of 33
What process is used to purify copper?
Electrolysis
25 of 33
Copper atoms on the Cathode are........
oxidised
26 of 33
Copper ions on the Anode are.............
reduced
27 of 33
What is "sludge"?
impurities from the copper
28 of 33
When purifying copper, what is the first step?
Copper atoms on the anode are oxidised
29 of 33
What is the second step in purifying copper?
Copper ions go into the solution
30 of 33
What is the third step in purifying copper?
At the cathode, copper ions are reduced, forming copper metal.
31 of 33
What is the final step in purifying copper?
The copper metal is deposited on the cathode
32 of 33
This was a good quiz.
Superdupermegafoxyawesomehot.
33 of 33

Other cards in this set

Card 2

Front

What is the name of the solution of ions?

Back

electrolyte

Card 3

Front

What is the name of the two rods that make contact with the solution of ions?

Back

Preview of the front of card 3

Card 4

Front

When are ions free to move?

Back

Preview of the front of card 4

Card 5

Front

What ions are attracted to the negative rod?

Back

Preview of the front of card 5
View more cards

Comments

lauren

Report

the quiz was good and helped me to get a better understanding of why i'm failing chemistry :p lol **

Sharmina

Report

A very detailed summary! Got a bit confused with the whole "what happens at the anode!" "what happens with the cathode!" 

Ellie

Report

very helpful especially as i fail so badly at chemistry slightly random question but i was just wondering about the 'supermegafoxyawesomehot' in the last question and are you a starkid by any chance? if so then that makes this quiz even more totally awesome and if not then you probably don't have a clue what I'm going on about but good quiz :)

Haannaah

Report

Good quiz! :) is Q 28 correct? i thought the anode dissolved and the cathode increased in size? x

ash

Report

exam on thurs!

Jo-ash

Report

Q28 is inconsistent

Jo-ash signing out

Jo-ash

Report

and learn to spell decomposes

Muskaan Mujahid

Report

Overall, an excellent & helpful quiz about Electrolysis.

In Q.32, the correct answer states that at the cathode, Copper is formed. Therefore, in Q.28, how can the anode get thicker? Shouldn't it be cathode which will get thicker?

ghjl

Report

this quiz was supermegafoxyawesomehot

ManWithIQof2

Report

Professor/Teacher/Tutor/Head/DeputyHead/Assistant/Co-Worker/SocialWorker/Janitor/Cleaner Approved

Similar Chemistry resources:

See all Chemistry resources »See all Electrolysis resources »