C1- mind map

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  • evolution of atmo.
    • phase 1
      • 1.any atmosphere boiled away
        • 2. a thin atmosphere formed but volcanos kept going
          • 3.volcanoes gave out lots of gas: CO2, water vapour and nitrogen we think how atmo was formed
        • 4. atmo. was probably mostly CO2 and water vapour with no oxygen
    • phase 2
      • 1. some green plants
        • 2.lot of CO2 dissolved into sea
          • 3.plants die and are buried naturally to produce coal
    • phase 3
      • 1.build up of oxygen killed of early lifeforms but caused others to evolve
        • 2.no CO2 left now
    • Atmosphere today
      • chemicals in atmo.
        • Nitrogen:78% Oxygen:21%         argon:1%
      • humans are changing atmosphere
        • pollutatnts: carbon dioxide,carb. monoxide, particulates, sulphur dioxide,
          • come from vehicles, fuels, power stations, nature
      • chemical reactions
        • use diagrams to rep. molecules
          • everything is made of tiny things called atoms
          • when to atoms go together they make a molecule
        • chemical reactions happen when they are re-arranged
          • no atoms are ever destroyed
        • Fossil fuels
          • hydrocarbons
            • formed from dead plants,animals
            • coal is not a hydrocarbon
          • oxidisation
            • combustion
              • chemical reactions
                • use diagrams to rep. molecules
                  • everything is made of tiny things called atoms
                  • when to atoms go together they make a molecule
                • chemical reactions happen when they are re-arranged
                  • no atoms are ever destroyed
                • Fossil fuels
                  • hydrocarbons
                    • formed from dead plants,animals
                    • coal is not a hydrocarbon
                  • oxidisation
                    • combustion
                      • when oxygen is added
              • when oxygen is added
        • carbon pollution
          • carbon dioxide
            • 2 molecules of oxygen and 1 carbon
              • reacts using photosynthesis
          • carbon monoxide
            • 1oxygen 1 carbon
              • produced instead of oxidisation
          • particulate carbon
            • 1. fly into the atmoshpere
              • 2. fall back down as soot
          • sulphur   So2 pollution
            • comes from impurities in fuels
              • extracted leftovers e.g. coal
            • 1. fly into the atmoshpere
              • 2. fall back down as soot
            • acid rain

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