What is the total number of atoms in a molecule of sulfur dioxide, SO2?
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Card 8
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How many oxygen atoms are present in a molecule of water H2O?
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Card 9
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What pollutant gas is always formed when coal is burned completely?
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Card 10
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What other gas is formed when petrol is burned completely?
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Card 11
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What acidic gas is formed when fuels containing sulfur compounds are burned?
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Card 12
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What is produced when sulfur dioxide reacts with water and oxygen?
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Card 13
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What pollutant coats the walls of buildings?
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Card 14
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What pollutant is removed by the process of photosynthesis?
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Card 15
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When the number of cars using a road increases, the concentration of nitrogen dioxide in the air increases. What word can be used to describe this link?
