Extracting metals from their ores
- Created by: ellaronald
- Created on: 15-10-15 18:51
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- Extracting Metals From Their Ores
- The ore must contain enough metal to make extraction worthwile
- It's expensive
- Reduction by carbon
- Chemically
- Only metals below carbon in the reactivity series can be extracted by reduction by carbon
- Carbon can only take oxygen from metals less reactive than itself
- Oxidised = oxygen added
- Reduced = oxygen taken away
- Electrolysis
- If the metal is more reactive than carbon it's extracted using electrolysis
- More expensive than reduction by carbon
- Uses lots of energy
- Means "Splitting up with electricity"
- Requires a liquid
- Impacts of extracting metals
- Advantages
- Useful products can be made
- Provides locals with jobs and money
- Services (like roads and hospitals) can be improved
- Disadvantages
- Noisy
- Destroys wildlife and habitats
- Can be dangerous
- Advantages
- Extracting copper using a displacement reaction
- If the copper is more reactive than the other metal it will replace the less reactive metal
- Copper sulphate + iron --> Iron sulphate + copper
- The ore must contain enough metal to make extraction worthwile
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