Metals

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  • Metals
    • Impacts of extracting metals
      • Can be bad for environment
        • Same reasons as quarrying
      • Recycling metals is important
        • Mining and extracting metals burns a lot of fossil fuels
          • Need to conserve fossil fuels
            • Recycling metals uses less fossil fuels
              • Fossil fuels aren't cheap - saves money
          • Only a small amount of metals
        • Cuts down amount of rubbish in landfill
    • Properties of metals
      • Strong
        • Bridges and car bodies
        • Saucepan base
        • Titanium
      • Bendy
        • Bridges and car bodies
        • Aluminium
      • Good conductor
        • Saucepan base
        • Electrical wires
        • Copper
      • Good but corrode, need to be protected
    • Alloys
      • Harder than pure metals
        • Different sized atoms
          • Can't slide over each other easily
      • Bronze = copper + tn
      • Cupronickel = copper + nickel
      • Gold alloys = gold + zinc / copper / silver / palladium / nickel

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