Chemical? ?Bonding? ?and? ?Structure 1.1? ?chemical? ?bonding:? ?the? ?attraction? ?between? ?particles Atoms Ions Molecules Smallest? ?unit? ?of? ?elements? ?that cannot? ?be? ?broken? ?down? ?into anything? ?simpler Atoms? ?that? ?are? ?covalently? ?bonded and? ?carry? ?an? ?overall? ?electrical charge Groups? ?of? ?atoms? ?that? ?are covalently? ?bonded Calcium? ?atom,? ?carbon? ?atom Calcium? ?ion,? ?oxide? ?ion Carbon? ?dioxide? ?molecule 1.2? ?Metallic? ?bond 1.2.1? ?Bonding? ?and? ?Structure - Metallic? ?bond? ?is? ?the? ??electrostatic? ?force? ?of? ?attraction?? ?between? ??positive? ?metal? ?ions?? ?and? ?the? ??sea? ?of delocalised? ?electrons - Giant? ?metallic? ?lattice? ?structure - Non-directional