Ionic bonding happens between metals and non-metals, Covalent bonding involves atoms sharing pairs of electrons, Metallic bonding occurs in a lattice of positive ions, Giant ionic structures have strong electrostatic forces, Simple molecules have low melting points, Giant covalent structures have very high melting points, Graphite conducts electricity because electrons can move, Diamond is very hard because each atom bonds strongly, Metals conduct electricity through delocalised electrons, Ionic compounds conduct when molten or dissolved, Ionic compounds usually have high melting points, Covalent compounds usually do not conduct electricity, A polymer is made from long chains of molecules, Nanoparticles are extremely small and have useful properties, Graphene is one atom thick, Fullerenes are forms of carbon with hollow shapes, Alloys are harder than pure metals, Pure metals are soft because layers slide easily, In covalent bonds atoms share electrons, In ionic bonds electrons are transferred

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