Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

CHEMISTRY IGCSE > Electrochemistry > Flashcards

Electrochemistry Flashcards

1
Q

Define electrolysis.

A

decomposition of an ionic compound, when molten or in aqueous solution, by the passage of an electric current

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the anode?

A

the positive electrode

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the cathode?

A

the negative electron

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the electrolyte?

A

the molten or aqueous substance that undergoes electrolysis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are formed at the cathode?

A

metals or hydrogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are formed at the anode?

A

non-metals (except hydrogen)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What process occurs at the anode?

A

oxidation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What process occurs at the cathode?

A

reduction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Why are metal objects electroplated?

A

to improve their appearance and resistance to corrosion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What process makes metal objects more resistant to corrosion and with improved appearance?

A

electroplating

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What does a hydrogen–oxygen fuel cell do?

A

uses hydrogen and oxygen to produce electricity with water as the only chemical product

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Electrolysis of MOLTEN LEAD(II) BROMIDE: product at the anode

A

bromine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Electrolysis of MOLTEN LEAD(II) BROMIDE: product at the cathode

A

lead

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Electrolysis of MOLTEN LEAD(II) BROMIDE: observations

A

cathode: silvery solid
anode: brown gas

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Electrolysis of concentrated aqueous NaCl: product at the anode

A

chlorine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Electrolysis of concentrated aqueous NaCl: product at the cathode

A

hydrogen

17
Q

Electrolysis of concentrated aqueous NaCl: observations

A

cathode: colourless gas, lit splint squeaky pop

anode: pale yellow-green gas (turns UI red and bleaches red litmus)

18
Q

Electrolysis of dilute sulfuric acid: product at the anode

A

oxygen

19
Q

Electrolysis of dilute sulfuric acid: product at the cathode

A

hydrogen

20
Q

Electrolysis of dilute sulfuric acid: observations

A

anode: colourless gas, relights glowing splint
cathode: colourless gas, lit splint squeaky pop

CHEMISTRY IGCSE (16 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions