c2 spider diagram

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  • C2
    • electrolysis (purification of copper)
      • anode
        • positive electrode
        • impure copper to be purified
        • impure cathode dwindles away
      • cathode
        • negative electrode
        • bar of pure copper
        • copper ions deposited as copper atoms
        • pure copper cathode increases in size
      • anode and cathode placed in Copper Sulfate solution
      • copper ions leave anode and attracted to cathode
    • earth structure
      • rock is recycled by geological processes
      • plate movements cause earthquakes and volcanoes
      • plate tectonic theory is now widely accepted
      • evidence needs to be repeatable and agreed for a theory to be accepted
      • scientists study volcanoes and earthquakes to try to predict future eruptions and seismic activity
    • fertilisers
      • The Haber process is a reversible reaction that makes ammonia
      • Nitrogen + Hydrogen -->  ammonia
        • ammonia is used to make nitrogen fertilisers
      • conditions for Haber process must be adjusted to maximise yield
      • fertilisers can cause eutrophication
      • fertilisers can be made by a neutralisation reaction
        • acid + base -> salt + water
    • salts
      • acids react with metal oxides and hydroxides, and metal carbonates to make salts



wlll donene


  1. Pure class 

pure class




Out of this world


why thankyou fellow students


Changed my life. I am now a scientist missionary preaching to all the little african boys and girls

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