Elements
| Diamond | Graphite |
| Buckminsterfullerene (Bucky Ball) |
Inorganic
| Ice | Sodium Chloride |
| BBr3 | BH4 |
| BeH2 | BrF5 |
| ClF2 | ClF3 |
| CO2 | CO32- |
| H2O | H2S |
| ICl4 | N2O |
| NH3 | NH4+ |
| NO2 | PCl3 |
| PCl5 | PO43- |
| SF4 | SF6 |
| SO2 | SO3 |
| SO2Cl2 | SiCl4 |
| XeF2 | XeOF4 |
Organic
Alkanes
| Butane | Decane |
| 2,2-Dimethylbutane | 2,3-Dimethylbutane |
| Ethane | Hexane |
| Isobutane | Isopentane |
| 2-Methylpentane | 3-Methylpentane |
| Neopentane | Nonane |
| Nonane | Pentane |
| Propane | 2,2,4-Trimethylpentane |
| 1-Butene | cis-2-Butene |
| Ethene | 2-Methylpropene |
| 3-Methylpentene | 1-Octene |
| trans-2-Butene |
| 1,2-Ethanediol | 2-Methyl-2-propanol |
| 1,2,3-Propanetriol | 2-Propanol |
| Aniline | Ethylamine |
| Triethylamine |
| Anthracene | Benzene |
| Cyclohexane - boat | Cyclohexane - chair |
| Cyclobutane | Cyclopentane |
| Cyclopropane | Naphthalene |
| Phenol | Toluene |
| Acetic Acid | Aspirin |
| Benzoic Acid | Citric Acid |
| Formic Acid | Oxalic Acid |
Biochemial
| b-Carotene | Cholesterol |
| 2-Deoxy-d-glucose | DNA |
| d-glucose | Lactose |
| Maltose | Sucrose |
| Urea | Vitamin A |
| Vitamin B12 | Vitamin D2 |
| Alanine | Aspartic Acid |
| Cysteine | Glutamic Acid |
| Glycine | Lysine |
| Phenylalanine | Serine |
| Valine |
| Acetaminophen | Amphetamine |
| Aspirin | Caffeine |
| Cocaine | Codeine |
| Ibuprofen | Morphine |
| Nicotine | Novocaine |
| Penicilin | Procaine |