a device that produces a voltage when supplied with a fuel and oxygen

the network that connects all the power stations in the country to make sure that everywhere has access to electricity

a fuel that formed over millions of years from the dead remains of organisms

Fuel cells

Chemistry

In the Using Earth's Resources unit, pupils learned about the extraction, production and uses of hydrocarbons from crude oil, as well as metal extraction.

Electrolysis

A device that produces a voltage when supplied with a fuel and oxygen.

A device that stores electricity for later use.

A device that produces fuel from water and sunlight.

What is the word equation for the overall reaction in a hydrogen fuel cell?

Hydrogen is oxidised into hydrogen ions and electrons.

Oxygen molecules are split into protons and electrons.

Hydrogen ions and electrons react with oxygen to produce water.

What happens at the anode in a hydrogen fuel cell?

What is the reaction at the anode in a hydrogen fuel cell?

What is one challenge of using fuel cells?

A process that changes substances into new substances.

A compound made of carbon and nitrogen atoms only. 

A compound made of hydrogen and carbon atoms only. 

A compound made of hydrogen and oxygen atoms only.

What is one product of hydrocarbon combustion?

A fuel formed over millions of years from the remains of organisms.

The network that connects power stations to provide electricity everywhere.

What is one environmental impact of using fossil fuels?

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