Tutor time revision - electrolysis.

• Chemistry
• Upper Secondary (Key Stage 4)
• GCSE

Tutor time revision - electrolysis.

What is the job of the anode (positive electrode) in electrolysis?

1. To repel negatively charged ions
2. To attract positively charged ions
3. To attract negatively charged ions
4. To conduct electricity

Which electrode gains electrons during electrolysis?

1. The anode
2. The cathode
3. Neither electrode
4. Both electrodes

What is the typical material for the anode in electrolysis?

1. Graphite (sometimes platinum)
2. Silver
3. Copper
4. Aluminum

Which electrode is connected to the positive terminal of the power supply?

1. Neither electrode
2. The anode
3. Both electrodes
4. The cathode

What happens at the electrodes to turn ions into atoms?

1. Electrons are gained or lost
2. Neutrons are released
3. Ions are created
4. Protons are exchanged

What is the role of electrodes in the process of ion conversion?

1. Accelerate chemical reactions
2. Facilitate electron gain or loss
3. Stabilize atomic structure
4. Increase ion concentration

How are ions transformed into atoms at the electrodes?

1. By attracting protons
2. By releasing neutrons
3. By gaining or losing electrons
4. By emitting photons

What is the process of using electrolysis?

1. Subjecting a substance to high pressure
2. Heating a substance to change its state
3. Passing an electric current through a substance
4. Mixing two substances to form a new compound

What is a common application of electrolysis?

1. Making paper from wood pulp
2. Manufacturing plastic from petroleum
3. Production of aluminum from aluminum oxide
4. Extracting oil from underground reservoirs

What happens during the electrolysis of water?

1. Hydrogen gas is produced at the cathode
2. Oxygen gas is produced at the anode
3. Electricity is consumed without any change in the water
4. Water evaporates into the atmosphere