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| PureSubstance | 308 | The Class of Substances with constant composition. A PureSubstance can be either an element (... | ^ |
| CompoundSubstance | 181 | The Class of Substances that contain two or more elements (ElementalSubstances) in definite p... | ^ |
| ChemicalAgent | 26 | Synthetic compounds that are not an analogue of anything occurring naturally and that can result in... | ^ |
| Saxitoxin | . | A class of chemically related neurotoxins that are produced by marine dinoflagellates and carried b... | ^ |
| Conotoxin | . | A class of neurotoxins that are produced by the Pacific cone snails. The lethality of these toxins ... | ^ |
| Tetrodotoxin | . | A Toxin produced by the pufferfish and several other (widely varying) species. The initial sympto... | ^ |
| IronOxide | 1 | IronOxides are chemical compounds composed of iron and oxygen. The best known of which is Rust.... | ^ |
| IllicitDrug | 10 | | ^ |
| ChemicalArtifact | . | ChemicalArtifact is the subclass of Artifact comprising all chemical compounds that are end pro... | ^ |
| Barite | . | Barite is Barium Sulfate occurring as a mineral. | ^ |
| Chromite | . | A mineral that consists of an oxide of iron and chromium. | ^ |
| NaturalGas | . | NaturalGas is a combustible mixture of methane and higher hydrocarbons. | ^ |
| Phosphate | . | Phospate is a salt or ester of a phosphoric acid. | ^ |
| Potash | . | Potash is a Potassium carbonate from wood ashes or a potassium compound. | ^ |
| DDT | . | DDT (dichoro_diphenyl_trichloro_ethane) is a highly toxic insecticide also harmful to most other ... | ^ |
| SulphurDioxide | . | SulfurDioxide is a toxic Gas with a chemical formula of SO2. | ^ |
| NitricOxide | . | NitricOxide is a chemical compound in the state of Gas, with a chemical formula of NO. | ^ |
| NitrogenDioxide | . | NitrogenDioxide is a chemical compound in the state of Gas, with a chemical formula of NO2. | ^ |
| CarbonDioxide | . | Carbon dioxide is a common compound in the Earth's atmosphere, and an essential compound used in th... | ^ |
| Alumina | . | Alumina is the naturally occurring oxide of aluminum which is found in corundum and bauxite. | ^ |
| IronOre | . | IronOre is a subclass of CompoundSubstance that contains compounds of iron, of which the most c... | ^ |
| ChemicalProduct | . | ChemicalProduct is the subclass of Product comprising all chemical compounds that are end produ... | ^ |
| Cement | . | Cement is a subclass of CompoundSubstance whose instances may contain various minerals or ores,... | ^ |
| PhosphoricAcid | . | | ^ |
| Chlorofluorocarbon | 1 | A chlorofluorocarbon (CFC) is an organic compound that contains carbon, chlorine, and fluorine, pro... | ^ |
| Wax | . | Any Substance of high molecular weight that resembles beeswax. | ^ |
| ConjugatedSubstance | . | A CompoundSubstance that results from the ChemicalSynthesis of two or more CompoundSubstances... | ^ |
| OrganicCompound | 40 | Any CompoundSubstance that has a Carbon base. | ^ |
| ChemicalAcid | 2 | Acids are substances which increase the concentration of hydronium ions (H3O+) in solution, substan... | ^ |
| ChemicalBase | 1 | A CompoundSubstance that is capable of reacting with a ChemicalAcid and forming a ChemicalSal... | ^ |
| ChemicalSalt | 4 | A bitter CompoundSubstance that is formed in a chemical reaction of a ChemicalBase with a Che... | ^ |
| Oil | 33 | A greasy, viscous CompoundSubstance that cannot be mixed with Water. Note that this general cla... | ^ |
| AtomicGroup | . | Two or more Atoms that are bound together and comprise part of a Molecule. | ^ |
| Water | 15 | The Class of samples of the compound H20. Note that this Class covers both pure and impure Wa... | ^ |
| Carbohydrate | 3 | A compound of living cells and a source of energy for Animals. This class includes both simple ... | ^ |
| Molecule | 10 | A molecule is the smallest unit of matter of a CompoundSubstance that retains all the physical an... | ^ |
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