Electrolysis (OCR GCSE Chemistry A (Gateway Science Suite)): Quizzes
📚Quizzes
Practise the questions
11 questions from this quiz
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Practise the questions
11 questions from this quiz
What is electrolysis?
What is electrolysis?
Using electricity to separate an ionic compound
Why must an ionic compound be molten or dissolved for electrolysis?
Why must an ionic compound be molten or dissolved for electrolysis?
So ions are free to move
Which electrode is the anode?
Which electrode is the anode?
The positive electrode
Which electrode is the cathode?
Which electrode is the cathode?
The negative electrode
What happens to positive ions at the cathode?
What happens to positive ions at the cathode?
They gain electrons (reduction)
What happens to negative ions at the anode?
What happens to negative ions at the anode?
They lose electrons (oxidation)
Which ions are attracted to the cathode?
Which ions are attracted to the cathode?
Positive ions
Which ions are attracted to the anode?
Which ions are attracted to the anode?
Negative ions
Why are electrodes usually made of inert materials?
Why are electrodes usually made of inert materials?
So they don't react with the electrolyte
In what forms can discharged products leave the electrolyte?
In what forms can discharged products leave the electrolyte?
As solid sediments or gases
Where do electrons released at the anode flow to?
Where do electrons released at the anode flow to?
To the cathode via external circuit