Core practical - 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
What does electrolysis use electrical energy to do?
What does electrolysis use electrical energy to do?
Break down ionic compounds
Why can aqueous ionic solutions conduct electricity?
Why can aqueous ionic solutions conduct electricity?
Ions are free to move around
What type of current must be used for electrolysis?
What type of current must be used for electrolysis?
Direct current (d.c.)
Why are graphite electrodes used in electrolysis?
Why are graphite electrodes used in electrolysis?
They don't react with products
Which ions are attracted to the cathode (negative electrode)?
Which ions are attracted to the cathode (negative electrode)?
Positive ions
Which ions are attracted to the anode (positive electrode)?
Which ions are attracted to the anode (positive electrode)?
Negative ions
What forms at the cathode during electrolysis of copper chloride solution?
What forms at the cathode during electrolysis of copper chloride solution?
Red-brown solid (copper)
What forms at the anode during electrolysis of copper chloride solution?
What forms at the anode during electrolysis of copper chloride solution?
Pale green gas (chlorine)
What forms at the anode during electrolysis of potassium bromide solution?
What forms at the anode during electrolysis of potassium bromide solution?
Orange solution (bromine)
How can you test for chlorine gas produced during electrolysis?
How can you test for chlorine gas produced during electrolysis?
It bleaches damp litmus paper white
What safety equipment must be worn during this practical?
What safety equipment must be worn during this practical?
Eye protection
What determines which products form during electrolysis?
What determines which products form during electrolysis?
Which ions are present