Font size
WorksheetsElectrolysis Mr L
Total questions: 15
Worksheet time: 8mins
What does the word "electrolysis" mean?
Reacting with electricity
Breaking down
Breaking down using electricity
What is a positive ion called?
cation
anode
anion
cathode
What is the positive electrode called?
cation
anode
anion
cathode
Which of these substance could you not electrolyse?
Molten sodium chloride
Dissolve sodium chloride
Solid sodium chloride
What happens to cations at the cathode? (2 answers)
They gain electrons
They lose electrons
They are oxidised
They are reduced
What happens to anions at the anode? (2 answers)
They gain electrons
They lose electrons
They are oxidised
They are reduced
What is rule for which cation is discharged (produced) at the cathode?
Most reactive is discharged
Least reactive is discharged
What is the priority for discharged (production) at the anode?
Halides, others, then hydroxides
Hydroxides, then halides, then others
Hydroxides, then others, then halides
Halides, hydroxides, then others
Which of these are uses of aluminium (multiple answers)
Cooking pans
Drinks cans
Car bodies
Power cables
What is the substance that aluminium ore is dissolved in called?
Cryolite
Kryptonite
Hydrochloric acid
Sodium hydroxide
What are the electrodes made from in the electrolysis of aluminium?
Iron
Tin
Sulfur
Carbon
When aluminium oxide is electrolysed, what gases can be formed? (2 answers)
Sulfur dioxide
Carbon dioxide
Oxygen
Hydrogen
Which of these is not the product of electrolysis of sodium chloride solution (brine)
Hydrogen gas
Chlorine gas
Oxygen gas
Sodium hydroxide solution
Why is chlorine produced in the electrolysis of sodium chloride instead of oxygen?
other chemical reactions
not enough current
halides are discharged first
Which of these is a use for chlorine produced from electrolysis of sodium chloride? (2 answers)
Food
Bleach
Making types of plastics (PVC)
Fuel
