Chemistry C3 3.5 Fuel issues.

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Created by: Atlanta and Jacob
Created on: 04-03-16 23:20

What does much of the world rely on for energy?

Fossil fuels.

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What are the disadvantages of fossil fuels?

They are non-renewable and they cause pollution.

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Why is there an urgent need to develop alternative fuels?

Fossil fuels are non-renewable and cause pollution.

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What is hydrogen used for?

Hydrogen is an alternative fuel, it can be burned in combustion engines or used in fuel cells to power vehicles.

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What advantages of using hydrogen as a fuel?

It burns easily and releases a large amount of energy per gram, it produces no carbon dioxide when it is burned (only water) and it can be produced from renewable sources.

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What are the disadvantages of using hydrogen as a fuel?

Supply, storage and safety problems.

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What do vehicles that use fuel cells need to be feasible?

They need to match the performance, convenience and costs of petrol and diesel vehicles.

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Why are cars fuelled with hydrogen being developed?

Fossil fuels: non-renewable/limited resource, cause pollution, release carbon dioxide, cause global warming. Hydrogen: produces only water and no carbon dioxide or pollutants, releases a large amount of energy per g, can be made from renewable sources.

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