C2 Chemistry Revision
- Created by: Joshuahinton_
- Created on: 26-01-16 11:42
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- C2
- Electrolysis
- Anode
- Positive Electrode
- Impure copper to be purified.
- Cathode
- Pure copper
- Negative Electrode
- The pure copper increases in size
- Anode
- Fertilisers
- Ammonia is made by a reversible reaction called the Haber process
- Nitrogen + hydrogen Ammonia
- Conditions for the Haber process include a high temperature - about 450ºC ,a high pressure - about 200 atmospheres (200 times normal pressure) and an iron catalyst
- Conditions for the Haber process are adjusted to maximise yeild.
- Ammonia is used to make nitrogen fertilisers
- Fertilisers can be made by a neutralisation reaction: acid + base --> salt + water
- Ammonia is made by a reversible reaction called the Haber process
- Earth structure
- Rock is recycled by geological processes
- Scientists study volcanoes and earthquakes in an attempt to predict future eruptions and seismic activity
- Plate movements in the earth cause earthquakes and volcanoes
- Materials
- Rocks are used as building materials but metals are also extracted from them
- Concrete alone is not very strong but can be reinforced with steel
- Alloys contain at least one metal but have different properties
- Iron rusts in contact with oxygen and water, salt speeds up rusting. Aluminium has low denstiy and doesnt corrode due to its oxide layer
- Electrolysis
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