GCSE Chemistry

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Author:
ghoran
ID:
156590
Filename:
GCSE Chemistry
Updated:
2012-05-31 05:52:33
Tags:
burning fuels problem from notes textbook
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revision
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  1. global dimming happens because of the solid particles released from burning fuels . These particles reflect sunlight back into space in addition ,
    water dropletss condense around them , making clouds that are reflective than normal clouds
  2. global dimming is likley to have reduced the impact of
    global warming
  3. global dimming has also reduced the amount of
    evapouration , interferring with the water cycle and possibly causing draughts
  4. what is the balanced symbol equation for acid rain
    SO2(g) + 2H2O(l) + O2(g) ----> 2H2SO4(aq)
  5. what is the word equation for acid rain
    sulphur dioxide + water + oxygen ----> sulphuric acid
  6. sulphur dioxide can be removed from the waste gases at power stations . It is absorbed by powdered
    calcium carbonate or damp calcium hydroxide , making a less harmful product , calcium sulphate
  7. complete combustion of coal happens when coal burns
    completely in a plentiful supply of air . Its carbon is oxidised to carbon dioxide
  8. what is the word equation of the complete combustion of coal
    carbon + oxygen ===> carbon dioxide
  9. what is the balanced symbol equation of the complete combustion of coal
    C + O2 ===> CO2
  10. incomplete combustion of coal happens when
    coal burns but the supply of air is not plentiful . As the coal burns , its carbon may be oxidised to carbon monoxide rather than carbon dioxide
  11. what is the word equation for the incomplete combustion of coal
    carbon + oxygen ====> carbon monoxide
  12. what is the balanced symbol equation for the incomplete combustion of coal
    2C + O2 ===> 2CO
  13. what is carbon monoxide
    it is a colourless and odourless toxic gas
  14. what effect to carbon monoxide have on the body
    it attatches to the haemoglobin in the red blood cells more strongly than oxygen , reducing the amount of oxygen transported in the bloodestream . Carbon monoxide poisoning causes headaches , sickness , fainting and even death
  15. natural gas is mostly
    methane with small amount of ethane and other alkanes
  16. the complete combustion of natural gas oxidises its
    carbon to carbon dioxide and its hydrogen to water vapour
  17. the partial combustion of natural gas also causes the production of
    carbon monoxide . This is why gas fires should have good ventilation
  18. the word equation for the complete combustion of natural gas is
    methane + oxygen ===> carbon dioxide + water
  19. the balanced symbol equation of the complete combustion of natural gas is
    CH4 + 2O2 ===> CO2 + 2H2O
  20. Petrol , Paraffin (also called Kerosene) , diesel and fuel oil are liquid fuels from
    crude oil
  21. when crude oil burns completely carbon
    dioxide and water vapour are produced
  22. what is the balanced symbol equation for this reaction
    octane + oxygen ===> carbon dioxide + water
    2C8H18 + 25O2 ===> 16CO2 + 18H20
  23. ............ ....... is produced from the partial combustion of crude oil
    carbon monoxide
  24. particulates are
    solid particles produced when fuels burn . They contain carbon and unburned fuel and are deposited as soot . The carbon is often noticeable as as black smoke from diesel powered vechiles , particuarly if the vechiles are old , accelerating or going uphill
  25. At the high temperatures in a furnace or engine , nitrogen and oxygen from the air can
    react together to produce various oxides of nitrogen .

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