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Chemistry - Chapter 13 - The Earth's Atmosphere (Equations (Complete…
Chemistry - Chapter 13 - The Earth's Atmosphere
The History of the Earth's Atmosphere
1) The Earth's surface was covered in volcanoes.
2) When volcanoes erupted they released Carbon Dioxide, water vapour and Ammonia.
3) The water vapour condensed and form rain.
4) The rain fell and formed the first oceans.
5) Bacteria started to grow.
6) Bacteria evolved into plants.
7) Plants started to photosynthesise and produce Oxygen.
The Greenhouse Effect
Global Climate Change
Carbon Footprints
Air Pollutants
Combustion
Equations
Complete Combustion:
fossil fuel + oxygen = carbon dioxide + water
Incomplete Combustion:
fossil fuel + oxygen = carbon monoxide + water
Photosynthesis:
Greenhouse Gases
Carbon Dioxide:
Carbon Increase
How we can help reduce Carbon Emissions
We Can:
Walk or cycle to get to places
The Effect of Air Pollutants
Proportion of Gases
Composition of Earths Early Atmosphere:
Carbon Dioxide = 95%
Composition of Today’s Atmosphere:
Nitrogen = 78%
Oxygen = 21%
Carbon Dioxide = 0.004%
Others = 1%
Our Evolving Atmosphere
Early Atmosphere:
no life
no oxygen
more hydrogen
more CO2 and CO
more ammonia
reducing
no argon present
equal amounts of N2, H20 and CH4
same sized oceans
Modern Atmosphere:
life
a lot of oxygen
less hydrogen
less carbon dioxide
less ammonia
oxidising
argon is present
equal amounts of N2, H20 and CH4
same sized oceans
Carbon Reduction