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Chemical decomposition, analysis or breakdown is the separation of a chemical compound into elements or simpler compounds. It is sometimes defined as the exact opposite of a chemical synthesis. Chemical decomposition is often an undesired chemical reaction. The stability that a chemical compound ordinarily has is eventually limited when exposed to extreme environmental conditions like heat, radiation, humidity or the acidity of a solvent. The details of decomposition processes are generally not well defined, as a molecule may break up into a host of smaller fragments. Chemical decomposition is exploited in several analytical techniques, notably mass spectrometry, traditional gravimetric analysis, and thermogravimetric analysis. A broader definition of the term decomposition also includes the breakdown of one phase into two or more phases. There are three broad types of decomposition reactions: thermal, electrolytic and catalytic. ==Reaction formula== The generalized reaction for chemical decomposition is: : AB → A + B with a specific example being the electrolysis of water to gaseous hydrogen and oxygen: : 2 H2O(''I'') → 2 H2 + O2 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Chemical decomposition」の詳細全文を読む スポンサード リンク
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