GCSE Chemistry – Electrolysis of aluminium

Last updated: 13/04/2020

AQA GCSE Science – Chemistry foundation Chemical changes GCSE Chemistry – Electrolysis of aluminium

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-I can describe the process of extracting aluminium by electrolysis

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Question 1 of 25

1. Question
What is the definition of electrolysis?
- Decomposing substances using electricity
- Decomposing substances using gas
- Decomposing substances using head
- Decomposing substances using energy
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Question 2 of 25

2. Question
What is needed to carry out electrolysis?
- Electricity
- Energy
- Heat
- Gravitational potential energy
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Question 3 of 25

3. Question
What is the anode?
- Positive electrode
- Negative electrode
- Gaseous electrode
- Solid electrode
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Question 4 of 25

4. Question
What is the cathode?
- Negative electrode
- Positive electrode
- Gaseous electrode
- Solid electrode
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Question 5 of 25

5. Question
Which part of the electrolysis cell is the carbon negative electrode?
- The lining
- The anode
- The aluminium
- The electricity
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Question 6 of 25

6. Question
Which is a use of aluminium?
- Aeroplanes
- Electronics
- Plastics
- Microchips
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Question 7 of 25

7. Question
Which is a use of aluminium?
- Pots and pans
- Bleach
- Rubber
- Cars
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Question 8 of 25

8. Question
Which is a use of aluminium?
- Overhead cables
- Latex
- Glassware
- Computers
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Question 9 of 25

9. Question
What is the name of an aluminium ore?
- Bauxite
- Chromite
- Coltan
- Cassiterite
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Question 10 of 25

10. Question
What does bauxite mainly contain?
- Aluminium oxide
- Pure aluminium
- Aluminium hydroxide
- Aluminium acid
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Question 11 of 25

11. Question
What is the formula of aluminium oxide?
- $Al_2O_3$
- $Al_2O$
- $AlO_3$
- $Al_3O_2$
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Question 12 of 25

12. Question
What method can be used to extract aluminium from its ore?
- Electrolysis
- Distillation
- Recrystallisation
- Condensing
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Question 13 of 25

13. Question
Why is the process of electrolysis needed to extract aluminium from its ore rather than using displacement?
- The aluminium is too reactive for a lot of metals
- Displacement takes too long
- Displacement is too expensive
- Displacement is too dangerous
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Question 14 of 25

14. Question
What type of aluminium is used during electrolysis?
- Molten
- Solid
- Liquid
- Gaseous
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Question 15 of 25

15. Question
What must be done to the aluminium oxide before it can undergo electrolysis?
- Melted
- Frozen
- Turned to an alloy
- Crystallised
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Question 16 of 25

16. Question
What must be done to the aluminium oxide before it can undergo electrolysis?
- Purified
- Distilled
- Remove
- Broken down
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Question 17 of 25

17. Question
Describe the amount of energy that is needed to carry out the electrolysis of extracting aluminium.
- A lot of energy
- Not much energy
- Depends on the amount of aluminium
- No energy
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Question 18 of 25

18. Question
Describe the amounts of electricity used during the electrolysis of aluminium.
- High amounts of electricity
- Low amount of electricity
- No electricity
- Relatively low amounts of electricity
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Question 19 of 25

19. Question
Describe the melting point of aluminium oxide.
- Very high melting point
- Very low melting point
- No melting point
- Relatively low melting point
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Question 20 of 25

20. Question
During electrolysis, what is the aluminium oxide mixed with to decrease the melting point?
- Cryolite
- Chromite
- Coltan
- Cassiterite
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Question 21 of 25

21. Question
Why can’t the aluminium oxide be melted singularly during electrolysis?
- Too expensive to melt alone
- Takes too long to melt alone
- It is too reactive
- It is too dangerous
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Question 22 of 25

22. Question
What is formed at the positive electrode?
- Oxygen
- Aluminium
- Carbon dioxide
- Cryolite
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Question 23 of 25

23. Question
What is formed at the negative electrode?
- Aluminium
- Oxygen
- Carbon dioxide
- Cryolite
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Question 24 of 25

24. Question
What gas is produced at the anode?
- Carbon dioxide
- Hydrogen
- Oxygen
- Nitrogen
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Question 25 of 25

25. Question
What is tapped off during the electrolysis of aluminium oxide?
- Aluminium
- Carbon dioxide
- Hydrogen
- Cryolite
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