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C1

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by

Pete Davis

on 23 March 2016

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Transcript of C1

C1 Air quality
What gases make up the air ?
How has the atmosphere changed
How are humans changing the air
and how does it effect our health ? Lesson 4
The burning reaction and the rearangement of atoms
in a reaction Lesson 5
Sources of pollutants
including burning sulfur Lesson 6 what happens to the pollutants in the air Lesson 7 How can we reduce powerstation emmissions and C02 emissions Lesson 8 Reducing vehicles emissions Hot, lots of CO2, water vapour.
Cooled rained.
Plants photosynthesised.
CO2 decreased, O2 increased. Complete Combustion hydrocarbon + oxygen → carbon monoxide + carbon + water Incomplete Combustion Pollution from combustion 1.Carbon dioxide
2. Carbon monoxide
3. Particulates
4. Sulphur dioxide
5. Nitrous oxides Carbon dioxide Carbon Monoxide Product of incomplete combustion Particulates By product of incomplete combustion Settle on buildings and in lungs Sulphur Dioxide formed when sulphur impurities in fuels are burnt causes acid rain can be reduced by using low sulphur fuel or by scrubbing exhaust gases Damages lakes, forests and buildings Nitrous Oxides (NOx) Caused when Nitrogen in air
combines with oxygen at
high temperatures Causes acid rain and breathing problems Solutions Hybrids - good in cities Electric cars
- short range
- charging up
- battery disposal NO + CO --> N2 + CO2 NO reduced to N2
CO oxidised to CO2 Catalysts speed up reactions
Full transcript