Half Equations in Electrolysis (AQA GCSE Chemistry): Quizzes
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Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What do half equations in electrolysis represent?
What do half equations in electrolysis represent?
Oxidation or reduction at electrodes
At which electrode does oxidation occur during electrolysis?
At which electrode does oxidation occur during electrolysis?
Anode
At which electrode does reduction occur during electrolysis?
At which electrode does reduction occur during electrolysis?
Cathode
In electrolysis, what happens to ions at the cathode?
In electrolysis, what happens to ions at the cathode?
They gain electrons to form
In electrolysis, what happens to ions at the anode?
In electrolysis, what happens to ions at the anode?
They lose electrons to form
How many electrons does each ion gain during reduction?
How many electrons does each ion gain during reduction?
Three electrons
In the oxygen half equation, how many electrons are released when two ions oxidise?
In the oxygen half equation, how many electrons are released when two ions oxidise?
Four electrons
What does reduction mean in terms of electrons?
What does reduction mean in terms of electrons?
Gaining electrons
What does oxidation mean in terms of electrons?
What does oxidation mean in terms of electrons?
Losing electrons
Which industry relies on electrolysis for metal extraction?
Which industry relies on electrolysis for metal extraction?
Aluminium extraction industry