c2 spider diagram
- Created by: EveryoneLovesRevision
- Created on: 26-01-16 11:39
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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
- anode
- 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
- electrolysis (purification of copper)
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