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B y K a t i e D o w l e r a n d M e l i s s a W h i t e

W h a t a r e t h e o r i g i n s a n d e n v i r o n m e n t a l i m p l i c a t i o n s o f p o l l u t a n t s i n c a r e x h a u s t g a s e s ?. B y K a t i e D o w l e r a n d M e l i s s a W h i t e. Carbon Monoxide (CO). How is it formed?

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B y K a t i e D o w l e r a n d M e l i s s a W h i t e

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  1. Whataretheorigins andenvironmentalimplicationsofpollutantsincarexhaustgases? ByKatieDowlerandMelissaWhite

  2. Carbon Monoxide (CO) How is it formed? • When a carbon reaction doesn’t have enough oxygen and therefore is incomplete carbon monoxide is formed. It is normally a carbon dioxide reaction. • Car exhaust emissions contain carbon monoxide from incomplete burning of fuel in the engine. What effects does it have on the environment? • Increases the global temperature (increase in global warming) • Combines with Haemoglobin which affects the respiratory system

  3. Carbon Dioxide (CO2) How is it formed? • When petrol burns, the carbon in it forms a covalent bond with oxygen in the air to form carbon dioxide. What effects does it have on the environment? • Carbon dioxide is mainly a problem as a greenhouse gas as this contributes to global warming • It traps the energy from the sun in the atmosphere, therefore heating the earth up • Contributes to acid rain

  4. Sulfur Dioxide (SO2) How is it formed? • Sulfur dioxide is formed when compounds containing sulfur are burnt. What effects does it have on the environment? • Effects plant, tree and crop productivity • Combines with water to form acidic products (contributes to acid rain) • Forms atmospheric particles

  5. Nitrogen Oxides (NOx) How is it formed? • During combustion at high temperatures • Nitrogen and oxygen gases in the air will not react on their own What effects does it have on the environment? • Helps to form acid rain • It adds to greenhouse gases which contributes to global warming • Effects the growth of plants • Can react with other pollutants to form toxic chemicals which will harm the environment

  6. Un-burnt Hydrocarbons (CxHy) How is it formed? • • Incomplete combustion of petrol in car exhausts • • Leakage from petrol tanks as the petrol vapourises and escapes into the air What effects does it have on the environment? • Some hydrocarbons are toxic • Assists the formation of the ozone layer • Produces air pollutants which can cause cancer

  7. Particulates How is it formed? • Produced by incomplete combustion of the hydocarbon fuels in diesel What effects does it have on the environment? • Reduces visibility in the area (haze) • Damaging forests and plants • Contributing to acid rain • Makes lakes and oceans more acidic

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