Chemistry: Allotopes

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  • ALLOTOPES
    • GRAPHITE
      • weak forces between layers
      • slippery
        • used in lubricant and pencils
      • carbon atoms bonded in hexagons
      • conducts electricity because there is a free electron
      • non metal
    • NANOTUBES
      • a graphite sheet rolled into a tube
      • has only three bonds between every carbon
      • conduct electricity because there are free electrons
    • DIAMOND
      • bonds extend through material
      • 2 non metals sharing a bond makes four covalent bonds
      • doesn't conduct electricity
        • group 4 - no free electrons
    • SILICON DIOXIDE
      • high melting point
      • does not conduct electricity because there are no free electrons
      • not non-metal
    • BUCKMINSTERFULLERINE
      • strong and light
      • hexagons and pentagons of carbons bonded together in a ball shape
      • has three covalent bonds between the carbon -  the chemical formula C60
      • can conduct electricity
      • used for sports equipment like tennis rckets
      • non-metal

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