Chemical Cells and Fuel Cells - Paper 1

Question 1

What is the purpose of a chemical cell?

Answer 1

To produce a voltage (until a reactant is used up).

Question 2

What is the only product in a hydrogen-oxygen fuel cell?

Answer 2

Water

Question 3

What are the advantages of fuel cells in spacecraft?

Answer 3

• They have no moving parts to maintain.
• They are small for the amount of electricity they produce.
• The water they produce is useful as drinking water.

Question 4

What are some advantages of fuel cells over petrol or diesel in vehicles?

Answer 4

• They are quiet.
• No moving parts.
• The only waste product is water, vs carbon dioxide.

Question 5

What are some advantages of petrol or diesel over fuel cells in vehicles?

Answer 5

• Easier to store.
• Far more frequent filling stations.