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Combustion
01/04/2023
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Q Combustion What is combustion? Combustion is another word for burning a fuel. It is an irreversible, chemical reaction. Combustion releases energy as heat, called an exothermic reaction. What is a fuel? A fuel is a substance that stores energy in a chemical store. When a fuel burns it transfers energy into the surrounds as heat (useful energy). What is a hydrocarbon? Most fuels contain hydrocarbons. It is a compound of hydrogen and carbon. The symbol for a hydrocarbon is CH4 Complete Combustion Complete combustion takes place when there is lots of oxygen. The fuel burns to form carbon dioxide and water. X Incomplete combustion Incomplete combustion takes place when there is not enough oxygen. The fuel burns to form carbon monoxide (extremely toxic), water and carbon. Advantages of complete combustion The water produced can be used in all sorts of ways useful to both human beings, animals and plants. Carbon dioxide can be useful, to an extent, by helping plants got photosynthesis. Disadvantages of complete combustion Though the carbon dioxide can have benefits for the planet, too much can contribute to climate change. Advantages of incomplete combustion. Incomplete combustion produces carbon monoxide that can be used in gas furnace, gas water heaters, wood burning stoves and more. Disadvantages of incomplete combustion. Incomplete combustion is dangerous as it produces carbon monoxide, an extremely harmful gas that can be fatal if humans inhaled it.
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