Electrolysis (AQA GCSE Chemistry): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
ShowHide
Practise the questions
12 questions from this quiz
What is electrolysis?
What is electrolysis?
Breaking down ionic compounds using electricity
When can electrolysis occur?
When can electrolysis occur?
When ionic compound is melted or dissolved
Why don't solid ionic compounds conduct electricity?
Why don't solid ionic compounds conduct electricity?
Ions are stuck in lattice structure
What happens to ions when an ionic compound is melted or dissolved?
What happens to ions when an ionic compound is melted or dissolved?
They become free to move around
What is the cathode?
What is the cathode?
The negative electrode
What is the anode?
What is the anode?
The positive electrode
What process happens at the anode?
What process happens at the anode?
Oxidation - electrons are lost
What process happens at the cathode?
What process happens at the cathode?
Reduction - electrons are gained
In electrolysis of molten , what forms at the cathode?
In electrolysis of molten , what forms at the cathode?
Lead metal
In electrolysis of molten , what forms at the anode?
In electrolysis of molten , what forms at the anode?
Bromine gas
Why is graphite often used for electrodes?
Why is graphite often used for electrodes?
Conducts electricity & doesn't react
What products form during copper chloride electrolysis?
What products form during copper chloride electrolysis?
Copper at cathode, chlorine at anode