Electrolysis Quiz

What is electrolysis?

• The process of extracting salt from water

• The process of combining hydrogen and oxygen to form water

• The process of converting electricity into water

• The process of splitting water into hydrogen and oxygen

What is released at the positive anodes during electrolysis?

• Hydrogen

• Electricity

• Oxygen

• Salt

What is released at the negative cathodes during electrolysis?

• Electricity

• Salt

• Oxygen

• Hydrogen

In terms of volume, how does the production of hydrogen compare to oxygen during electrolysis?

• Hydrogen is produced two times more than oxygen

• Hydrogen is produced four times more than oxygen

• Hydrogen is produced three times more than oxygen

• Hydrogen is produced in the same volume as oxygen

Why is pure water not a good conductor of electricity during electrolysis?

• Pure water is an insulator and does not allow the flow of electricity

• Pure water reacts with electricity and becomes harmful

• Pure water evaporates when electricity is passed through it

• Pure water contains impurities that hinder the flow of electricity

What is added to water to improve its conductivity during electrolysis?

• Oil

• Sugar

• Salt

• Vinegar

What is a proton exchange membrane (PEM) used for in electrolysis?

• To extract hydrogen from water

• To extract oxygen from water

• To prevent the flow of electricity

• To convert electricity into salt

What does the proton exchange membrane (PEM) provide during electrolysis?

• Particle transport between salt and water

• Particle transport between hydrogen and oxygen

• Particle transport between anodes and cathodes

• Particle transport between electricity and water

What is the main advantage of using a proton exchange membrane (PEM) in electrolysis?

• It allows for the extraction of oxygen from pure water

• It allows for the extraction of hydrogen from pure water

• It prevents the production of salt during electrolysis

• It improves the conductivity of pure water

What grade level is this quiz suitable for?

• Grade 5

• Grade 8

• Grade 12

• Grade 10