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LO: I know some examples of biofuels.
5.7 Alternative Fuels 5.7.1 Biofuels LO: I know some examples of biofuels.
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Biofuels are produced by .
living organisms Methane: Produced by micro-organisms from material. decaying Can be burned to produce and heat electricity Is a stronger gas than carbon dioxide. greenhouse Ethanol: Produced from the fermentation of sugar Methanol: Produced from the reaction of and steam methane Both methanol and ethanol have high numbers. octane LO: I know some examples of biofuels.
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LO: I understand what is meant by the hydrogen economy.
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renewable source of electricity
The hydrogen economy is an economic system built upon the use of hydrogen as a fuel renewable source of electricity water hydrogen gas electrolysis Advantages: Disadvantages: Cheap raw material. Difficult to store. Very little pollution. Risk of explosion. LO: I understand what is meant by the hydrogen economy.
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LO: I understand what is meant by a fuel cell.
5.7.3 Fuel Cells LO: I understand what is meant by a fuel cell.
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Fuel cells produce electrical energy directly from energy.
chemical Hydrogen/oxygen fuel cell: Advantages: No energy is wasted as heat. Produces no pollution at all. LO: I understand what is meant by a fuel cell.
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