Air Quality

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  • Air Pollutants
    • when fuels burn, atoms of carbon and/or hydrogen from the fuel combine with atoms of oxygen from the air to produce hydrogen oxide
    • Petrol, diesel fuel and fuel oil are mainly hydrocarbons
    • Coal is mainly carbon
    • in a chemical reaction, the properties in the product and the reactants are different
    • fuel burns more rapidly I pure oxygen than in air
    • fuel burns more rapidly in pure oxygen than in air
    • oxygen can be obtained from the atmosphere and cab be used to support combustion
    • OIL RIG
    • atoms are rearranged during a chemical reaction
    • during the course of a chemical reaction the numbers of atoms of each element must be the same in the products as in the reactants, thus conserving mass
    • sulfur dioxide is produced if the fuel that is burned contains any sulfur
    • burning fossil fuels pollute the atmosphere with: a) carbon dioxide and sulfur dioxide b) carbon monoxide and particulate carbon c) nitrogen oxides
    • nitrogen monoxide is formed during the combustion of fuels in air and is subsequently oxidised to nitrogen dioxide
    • atmospheric pollutants cannot just dissapear a) particulate carbon is deposited on surfaces, making them dirty b) sulfur dioxide and nitrogen dioxide react with water and oxygen to produce acid which is harmful on the environment c) co2 is used by plants in photosynthesis d) co2 dissolves in rain water and in sea water


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