| Term | Definition |
| CS2 | carbon disulfide |
| N2O5 | dinitrogen pentaoxide |
| PCl3 | phosphorus trichloride |
| H2O | dihydrogen oxide |
| N2O | dinitrogen oxide |
| ClF3 | chlorine trifluoride |
| B2O3 | diboron trioxide |
| P2S3 | diphosphorus trisulfide |
| CH4 | carbon tetrahydride |
| Fe²+ | iron(II) ion / ferrous ion |
| Fe³+ | iron(III) ion / ferric ion |
| Cu+ | copper(I) ion / cuprous ion |
| Cu²+ | copper(II) ion / cupric ion |
| Hg2²+ | mercury(I) ion / mercurous ion |
| Hg²+ | mercury (II) ion / mercuric ion |
| Cr²+ | chromium(II) ion / chromous ion |
| Cr³+ | chromium(III) ion / chromic ion |
| Co²+ | cobalt(II) ion / cobaltous ion |
| Co³+ | cobalt(III) ion / cobaltic ion |
| Ni²+ | nickel(II) ion / none |
| Sn²+ | tin(II) ion / stannous ion |
| Pb²+ | lead(II) ion / plumbous ion |
| CuCl | copper(I) chloride / cuprous chloride |
| Co2S3 | cobalt(III) sulfide / cobaltic sulfide |
| CrBr3 | chromium(III) bromide / chromic bromide |
| NH4+ | ammonium ion |
| OH- | hydroxide ion |
| CN- | syanide ion |
| NO3- | nitrate ion |
| NO2- | nitrite ion |
| HCO3- | hydrogencarbonate or bicarbonate ion |
| C2H3O2- | acetate ion |
| MnO4- | permanganate ion |
| ClO- | chlorite ion |
| ClO3- | chlorate ion |
| ClO4- | perchlorate ion |
| HSO4- | hydrogensulfate ion |
| H2PO4- | dihydrogenphosphate ion |
| -SO4²- | sulfate ion |
| SO3²- | sulfite ion |
| CO3²- | carbonate ion |
| C2O4²- | oxalate ion |
| CrO4²- | chromate ion |
| Cr2O7²- | dichromate ion |
| HPO4²- | hydrogenphosphate ion |
| PO4³- | phosphate ion |
| NaHCO3 | sodium hydrogencarbonate |
| (NH4)3PO4 | ammonium phosphate |
| Fe2(SO4)3 | iron(III) sulfate |
| FeSO4 | iron(II) sulfate |
| Ba(OH)2 | barium hydroxide |
| CaC2O4 | calcium oxalate |