Fuel Cell Demo

What two substances are combined in a fuel cell to produce electricity?

• Carbon dioxide and water

• Hydrogen gas and oxygen gas

• Methane and nitrogen

• Glucose and carbon dioxide

What is the primary function of the catalyst in a fuel cell?

• To prevent hydrogen and oxygen from mixing

• To separate hydrogen gas into protons and electrons

• To combine protons and electrons to form water

• To generate heat for the reaction

How is electricity generated in a hydrogen fuel cell?

• By the direct combination of hydrogen and oxygen

• By the movement of protons through the electrolyte

• By the flow of electrons through an external circuit

• By the formation of water molecules

What is the only byproduct of a hydrogen fuel cell's operation?

• Carbon dioxide

• Soot

• Water

• Sulfur dioxide