Electrolysis Quiz

What is electrolysis?

• A method to split compounds using electricity

• A process of heating metals

• A way to dissolve metals in water

• A technique to measure electric current

What is an electrolyte?

• A liquid or solution containing free ions

• A gas used in electrolysis

• A solid conductor

• A type of battery

What is required for ions in an electrolyte to move freely?

• The compound must be gaseous

• The compound must be frozen

• The compound must be solid

• The compound must be in a liquid or molten state

What are electrodes generally made of?

• Metal or carbon

• Glass

• Wood

• Plastic

What is the positive electrode called?

• Electrolyte

• Battery

• Anode

• Cathode

What is the negative electrode called?

• Cathode

• Anode

• Battery

• Electrolyte

What is the role of the battery in electrolysis?

• To heat the electrolyte

• To provide a container for the reaction

• To cool the electrolyte

• To drive the flow of electrons

What happens to bromide ions at the anode?

• They are reduced to bromine

• They are oxidized to bromine

• They form lead

• They dissolve in water

What is formed at the cathode during the electrolysis of lead bromide?

• Water

• Copper sulfate

• Pure lead

• Bromine gas

What does the term 'discharged' mean in electrolysis?

• Ions become more charged

• Ions dissolve in the electrolyte

• Ions gain energy

• Ions become neutral atoms