Chemical Bonding

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Last updated 12:12 PM on 7/16/26
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11 Terms

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intramolecular bond

a bond between atoms within molecules

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non polar covalent

  • non metal + non metal

  • END = 0

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polar covalent

  • non metal + non metal

  • END =/ 0

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properties of giant covalent lattices

  • made of atoms

  • high melting points

  • poor electrical conductors, don’t carry charge (excl graphite)

  • eg: SiO2, diamond, ceramic

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ionic bonds

metals + non metals

NB: ammonium NH4+1 can also form ionic bonds

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properties of ionic lattices

  • made of anions and cations (electrostatic attraction)

  • high melting points

  • only conduct when molten (l) or dissolved in water

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metallic bonds

  • metal + metal

  • sea of free moving delocalised valence electrons between positive kernels

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properties of metallic lattices

  • made of atoms

  • high melting points

  • good conductors (free moving electrons that transfer charge)

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electrical conductivity

free moving chareged particles (ions or electrons)

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ionisation

covalent substances react with water to form an aq solution which allows electrical conductivity

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dissociation

ionic substances react with water to form an aq solution which allows electrical conductivity