Chemistry · GCSE
Strong Bonds, Weak Forces
Why something held together by strong covalent bonds melts in your hand while a salt needs 800 °C. Ionic, covalent and metallic bonding; carbon three ways as diamond, graphite and graphene, with the bond count that decides everything; the three states and the particle model’s own limitations; diamond, buckminsterfullerene and gold nanoparticles compared; a worked surface-area-to-volume ratio. Ten terms to define, a model answer contrasting chlorine and sodium chloride, and the misconceptions that cost marks.
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