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The Atmosphere - GCSE Chemistry C1
Descripción
GCSE Chemistry Mapa Mental sobre The Atmosphere - GCSE Chemistry C1, creado por Holly Heather el 12/04/2017.
Sin etiquetas
chemistry
gcse chemistry
the atmosphere
atmosphere
c1
chemistry
gcse
Mapa Mental por
Holly Heather
, actualizado hace más de 1 año
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Creado por
Holly Heather
hace más de 7 años
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Resumen del Recurso
The Atmosphere - GCSE Chemistry C1
Today's Atmosphere
Composition
78% Nitrogen
21% Oxygen
0.04% Carbon Dioxide
0.96% Other gases
Components of air can be separated by:
Fractional distillation of liquid air
History of the atmosphere
Original atmosphere formed by volcanic activity
4.5 billion years ago
Original atmosphere contained
Carbon Dioxoide
Water vapour
Little to no oxygen
Small amounts of other gases such as NH3, CH4
Earth cooled, water vapour condensed to form oceans
Decrease in CO2 levels
CO2 dissolved into oceans
CO2 incorporated into marine organisms
Through food
Carbonate rocks
Primitive plants photosynthesising
6CO2(g) + 6H2O(l) --> C6H12O6(aq) + 6O2(g)
Increase in O2 levels
The Atmosphere is still changing due to:
(Livestock) Farming
Methane
Volcanic Eruptions
Sulphur dioxide
Carbon Dioxide
Combustion
Carbon Dioxide
Deforestation
Decrease in photosynthesis
More CO2
Less O2
Global Warming
CO2 is a greenhouse gas
Absorbs heat, maintains temperature
As CO2 levels have increased over the past 200 years, there has been an increase in average global temperature
Correlation, but not a causal link
Reducing CO2 in the atmosphere
Iron seeding of oceans to fertilise phytoplankton
Developing means of converting CO2 into hydrocarbons to re-use as fuels
Alternative forms of energy productions such as wind farms
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