9.2/R3.2.8 Electrolysis terminology Basics

What is electrolysis used for in the International Space Station?

• To remove unwanted facial hair

• To produce oxygen

• To produce aluminium

• To generate electricity

What is the main purpose of electrolysis?

• To convert electrical energy to chemical energy

• To convert chemical energy to electrical energy

• To split substances using electricity

• To remove unwanted hair

Which type of current is suitable for electrolysis?

• Direct current (DC)

• Alternating current (AC)

• Both DC and AC

• None of the above

What are the electrodes typically made of in electrolysis?

• Graphite and platinum

• Copper and zinc

• Aluminum and steel

• Silver and gold

What is an electrolyte in the context of electrolysis?

• A substance that conducts electricity as a liquid

• A substance that conducts electricity as a solid

• A substance that insulates electricity

• A substance that decomposes chemically

Which electrode is the positive electrode in electrolysis?

• Anode

• Cathode

• Both anode and cathode

• Neither anode nor cathode

What can be used as an electrolyte in electrolysis?

• Liquid salt

• Aqueous salt

• Both liquid salt and aqueous salt

• Neither liquid salt nor aqueous salt

What is one potential application of electrolysis?

• Producing hydrogen for hydrogen-powered cars

• Removing unwanted hair

• Generating electricity for homes

• Creating jewelry from metals

What happens to lead bromide during electrolysis?

• Lead bromide breaks down into lead metal and bromine gas.

• Lead bromide converts into lead chloride and bromine gas.

• Lead bromide decomposes into lead ions and bromide ions.

• Lead bromide forms lead oxide and bromine gas.