C2 Revision

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  • Created by: DevvoGoat
  • Created on: 26-01-16 10:47
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  • C2 Revision
    • The Structure of the Earth
      • Plate movements cause earthquakes and volcanoes
      • Rock is recycled by geographical processes
      • 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 predict future eruptions and seismic activity.
          • Rock is recycled by geographical processes
    • Materials
      • Alloys contain at least 1 metal but have different properties
        • Copper is extracted by reduction and purified by electrolysis.
        • Rocks are used as building materials.
        • Concrete is not very strong but can be reinforced with steel
      • Aluminium is a metal with a low density, which does not corrode because it has a protective oxide layer.
      • Iron rusts in contact with oxygen and water, and salt speeds up rusting.
    • Salts
      • Acids react with metal oxides and hydroxides and metal carbonates to make salts.
      • Sodium Chloride is an important raw material mined from the ground or solution mining
      • Electrolysis is used to split sodium chloride solution into hydrogen,chlorine and sodium hydroxide
        • In electrolysis, positive ions move to the cathode and negative ions to the anode
  • Fertilisers
    • The haber process is a reversible reaction that makes ammonia.
      • The word equation is      Nitrogen +Hydrogen= ammonia
      • Conditions for the Haber process can be adjusted to give maximum yield.
        • Fertilisers can be made by a neutralisation reaction acid + base = salt +water
    • C2 Revision
      • The Structure of the Earth
        • 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 predict future eruptions and seismic activity.
        • Materials
          • Alloys contain at least 1 metal but have different properties
            • Copper is extracted by reduction and purified by electrolysis.
            • Rocks are used as building materials.
            • Concrete is not very strong but can be reinforced with steel
          • Aluminium is a metal with a low density, which does not corrode because it has a protective oxide layer.
          • Iron rusts in contact with oxygen and water, and salt speeds up rusting.
        • Salts
          • Acids react with metal oxides and hydroxides and metal carbonates to make salts.
          • Sodium Chloride is an important raw material mined from the ground or solution mining
          • Electrolysis is used to split sodium chloride solution into hydrogen,chlorine and sodium hydroxide
            • In electrolysis, positive ions move to the cathode and negative ions to the anode
      • Fertilisers can cause eutrophication

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