2. Different compositions: basically all organic substances contain carbon compounds, but those containing carbon compounds are not necessarily organic substances; All organic compounds contain carbon compounds, but those containing carbon compounds are not necessarily organic compounds.
3. Different classification: there are many kinds of organic matter, which can be divided into two categories: hydrocarbons and hydrocarbon derivatives; According to the carbon skeleton structure of organic molecules, they can be divided into three categories: open-chain compounds, carbocyclic compounds and heterocyclic compounds. Classification of inorganic substances Pure substances without carbon elements refer to pure substances without carbon elements and some carbon-containing compounds. The most essential difference between organic matter and inorganic matter lies in whether there is a material basis for life.
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Compared with inorganic substances, organic substances are numerous, reaching millions. The carbon atoms of organic compounds have very strong binding ability and can combine with each other to form carbon chains or carbon rings. The number of carbon atoms can be 1, 2, thousands or tens of thousands, and many organic polymer compounds can even have hundreds of thousands of carbon atoms. In addition, isomerization is very common in organic compounds, which is one of the reasons for the large number of organic compounds.
Organic compounds can burn except a few. Compared with inorganic substances, their thermal stability is poor, and the electrolyte is easy to decompose when heated. The melting point of organic matter is lower than 400℃. Organic matter is very weak in polarity, so most of it is insoluble in water. The reactions between organic compounds are mostly intermolecular reactions, which often require certain activation energy, so the reaction is slow and often requires catalysts and other means.
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