The Process of Electrolysis (OCR GCSE Chemistry A, Combined (Gateway Science Suite)): Quizzes
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Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What does the term 'electrolysis' mean?
What does the term 'electrolysis' mean?
Splitting using electricity
Why must an ionic compound be molten or dissolved for electrolysis to occur?
Why must an ionic compound be molten or dissolved for electrolysis to occur?
So ions are free to move
Which electrode is the positive electrode in electrolysis?
Which electrode is the positive electrode in electrolysis?
The anode
Which electrode is the negative electrode in electrolysis?
Which electrode is the negative electrode in electrolysis?
The cathode
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 during electrolysis?
Which ions are attracted to the cathode during electrolysis?
Positive ions
Which ions are attracted to the anode during electrolysis?
Which ions are attracted to the anode during electrolysis?
Negative ions
Why are electrodes in electrolysis usually made of inert materials?
Why are electrodes in electrolysis usually made of inert materials?
So they don't react with electrolyte
What does the power source create between the electrodes?
What does the power source create between the electrodes?
A potential difference
Where do electrons flow in the external circuit during electrolysis?
Where do electrons flow in the external circuit during electrolysis?
From anode to cathode
In what forms can discharged ions leave the solution during electrolysis?
In what forms can discharged ions leave the solution during electrolysis?
Solid sediments or gases