Graphite: can conduct electricity, contains unbonded electrons, has weak intermolecular forces , made of layers called graphene, used for lubricants, each atom forms 3 bonds, is soft, Diamond: cannot conduct electricity, all  the electrons are bonded, has strong bonds between all of the atoms, is very hard, is used for drill tips, each atom forms 4 bonds, Both: contains covalent bonds, made of carbon atoms, a giant covalent molecule, has a high melting and boiling point,

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