Electrolysis (AQA GCSE Chemistry): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
Why is electrolysis used to extract aluminium rather than reduction with carbon?
Why is electrolysis used to extract aluminium rather than reduction with carbon?
Aluminium is too reactive
What is the name of the primary ore from which aluminium is extracted?
What is the name of the primary ore from which aluminium is extracted?
Bauxite
What is the chemical formula of aluminium oxide found in bauxite?
What is the chemical formula of aluminium oxide found in bauxite?
Why is cryolite mixed with bauxite during aluminium extraction?
Why is cryolite mixed with bauxite during aluminium extraction?
To lower the melting point
What type of electrodes are used in the electrolysis of molten aluminium oxide?
What type of electrodes are used in the electrolysis of molten aluminium oxide?
Graphite
Which ions are attracted to the cathode during aluminium extraction?
Which ions are attracted to the cathode during aluminium extraction?
ions
What process occurs at the cathode during aluminium extraction?
What process occurs at the cathode during aluminium extraction?
Reduction (gain of electrons)
Why does molten aluminium sink to the bottom of the electrolytic cell?
Why does molten aluminium sink to the bottom of the electrolytic cell?
It is denser than the mixture
Which ions are attracted to the anode during aluminium extraction?
Which ions are attracted to the anode during aluminium extraction?
ions
What process occurs at the anode during aluminium extraction?
What process occurs at the anode during aluminium extraction?
Oxidation (loss of electrons)
What gas is produced at the anode in aluminium extraction?
What gas is produced at the anode in aluminium extraction?
Oxygen
What else can be produced at the anode besides oxygen?
What else can be produced at the anode besides oxygen?
Carbon dioxide