Chemistry 1A - Products from Rocks: Environmental Problems 0.0 / 5 ? ChemistryEnvironmental ProblemsGCSEAQA Created by: ex-JohnsonfamilyCreated on: 16-03-15 18:06 Why do power stations burn fossil fuels? To make electricity. 1 of 14 What is the name of the process which involves burning fuels? Combustion. 2 of 14 What is the word equation for combustion? Hydrocarbon + oxygen = carbon dioxide + water vapour 3 of 14 What is released if a fuel is burnt that contains sulfur impurities? Sulfur dioxide. 4 of 14 When does complete combustion occur? When there's plenty of oxygen. 5 of 14 When does incomplete combustion occur? When there's not enough oxygen. 6 of 14 Sulfur Dioxide causes...? Acid rain. 7 of 14 Name three alternative fuels. Ethanol, Biodiesel, Hydrogen Gas. 8 of 14 Name one pro of Ethanol as an alternative fuel. The CO2 released when it's burnt was taken in by the plant as it grew, so it's 'carbon neutral'. 9 of 14 Name one con of Ethanol. Engines need to be converted before they work with ethanol. It could increase food prices. 10 of 14 Name one pro of Biodiesel. It's carbon neutral, engines don't need to be converted, it produces less sulfur dioxide. 11 of 14 Name one con of Biodiesel. We can't make enough, it's expensive. 12 of 14 Name one pro of Hydrogen Gas. It's very clean. 13 of 14 Name one con of Hydrogen Gas. You need a special, expensive engine. Hydrogen isn't widely available. Hydrogen's hard to store. 14 of 14
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