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Sigma KEE - CompoundSubstance
KB Term: 
The Class of Substances that contain two or more elements (ElementalSubstances) in definite proportion by weight. The composition of a pure compound will be invariant, regardless of the method of preparation. Compounds are composed of more than one kind of atom (element). The term molecule is often used for the smallest unit of a compound that still retains all of the properties of the compound. Examples: Table salt (sodium chloride, NaCl), sugar (sucrose, C_{12}H_{22}O_{11}), and water (H_2O).
Parents PureSubstance The Class of Substances with constant composition. A PureSubstance can be either an element (ElementalSubstance) or a compound of elements (CompoundSubstance). Examples: Table salt (sodium chloride, NaCl), sugar (sucrose, C_{12}H_{22}O_{11}), water (H_2O), iron (Fe), copper (Cu), and oxygen (O_2).
Children 礬土Alumina is the naturally occurring oxide of aluminum which is found in corundum and bauxite.
 原子團Two or more Atoms that are bound together and comprise part of a Molecule.
 重晶石Barite is Barium Sulfate occurring as a mineral.
 CarbohydrateA compound of living cells and a source of energy for Animals. This class includes both simple Carbohydrates, i.e. sugars, and complex Carbohydrates, i.e. starches.
 CarbonDioxideCarbon dioxide is a common compound in the Earth's atmosphere, and an essential compound used in the cycle of photosynthesis.
 水泥Cement is a subclass of CompoundSubstance whose instances may contain various minerals or ores, prepared by heating and pulverizing, and used in binding Concrete or in laying brick or stone.
 化學酸A bitter CompoundSubstance that is capable of reacting with a ChemicalBase and forming a ChemicalSalt.
 化學劑Synthetic compounds that are not an analogue of anything occurring naturally and that can result in serious burns, paralysis, and death to Organisms.
 化學基地A CompoundSubstance that is capable of reacting with a ChemicalAcid and forming a ChemicalSalt.
 化學產品ChemicalProduct is the subclass of Product comprising all chemical compounds that are end products or industrial products used in the manufacture of end products.
 化學鹽A bitter CompoundSubstance that is formed in a chemical reaction of a ChemicalBase with a ChemicalAcid.
 ChlorofluorocarbonA chlorofluorocarbon (CFC) is an organic compound that contains carbon, chlorine, and fluorine, produced as a volatile derivative of methane and ethane. A common subclass are the hydrochlorofluorocarbons (HCFCs), which contain hydrogen, as well. They are also commonly known by the DuPont trade name Freon. The most common representative is dichlorodifluoromethane (R-12 or Freon-12). Many CFCs have been widely used as refrigerants, propellants (in aerosol applications), and solvents. The manufacture of such compounds has been phased out by the Montreal Protocol because they contribute to ozone depletion. [from Wikipedia]
 鉻鐵礦A mineral that consists of an oxide of iron and chromium.
 共軛物質A CompoundSubstance that results from the ChemicalSynthesis of two or more CompoundSubstances.
 芋螺毒素A class of neurotoxins that are produced by the Pacific cone snails. The lethality of these toxins varies widely, and it would be impractical to manufacture them on a large scale.
 DDTDDT (dichoro-diphenyl-trichloro-ethane) is a highly toxic insecticide also harmful to most other animal species. DDT was banned in the UnitedStates in 1972.
 鐵礦IronOre is a subclass of CompoundSubstance that contains compounds of iron, of which the most common are hematite and limonite. Iron is obtained from smelting iron ores.
 MoleculeA molecule is the smallest unit of matter of a CompoundSubstance that retains all the physical and chemical properties of that substance, e.g., Ne, H2, H2O. A molecule is two or more Atoms linked by a chemical bond.
 天然氣NaturalGas is a combustible mixture of methane and higher hydrocarbons.
 NitricOxide NitricOxide is a chemical compound in the state of Gas, with a chemical formula of NO.
 NitrogenDioxideNitrogenDioxide is a chemical compound in the state of Gas, with a chemical formula of NO2.
 A greasy, viscous CompoundSubstance that cannot be mixed with Water. Note that this general class covers petroleum oil, vegetable oil, animal fat, etc.
 有機化合物Any CompoundSubstance that has a Carbon base.
 磷酸鹽Phospate is a salt or ester of a phosphoric acid.
 鉀肥Potash is a Potassium carbonate from wood ashes or a potassium compound.
 石房蛤毒素A class of chemically related neurotoxins that are produced by marine dinoflagellates and carried by Mollusks.
 SulphurDioxideSulfurDioxide is a toxic Gas with a chemical formula of SO2.
 河豚毒素A Toxin produced by the pufferfish and several other (widely varying) species. The initial symptoms include numbness in the lips and tongue, which spreads throughout the body. The next phase of the poisoning is paralysis, which again spreads throughout the body.
 WaterThe Class of samples of the compound H20. Note that this Class covers both pure and impure Water.
 Any Substance of high molecular weight that resembles beeswax.

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