C2 Revision
- 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.
- Alloys contain at least 1 metal but have different properties
- 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
- The Structure of the Earth
- 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.
- Alloys contain at least 1 metal but have different properties
- 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
- The Structure of the Earth
- Fertilisers can cause eutrophication
- The haber process is a reversible reaction that makes ammonia.
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