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物质氧化性、还原性强弱判断是中学化学教学的重点、难点,同时也是高考的热点.如何熟练的掌握比较物质的氧化性、还原性强弱对于学生备考具有非常重要的意义.一、氧化还原反应有关概念和本质(如图1)物质的氧化性、还原性的强弱与其得失电子能力有关,与得失电子的数目无关.氧化性→得电子性,得到电子越容易→氧化性越强还原性→失电子性,失去电子越容易→还原性越强
The determination of the material oxidative and reductive strength is the key point and the difficult point of the chemistry teaching in middle school.It is also a hot spot for the college entrance examination.How to master the comparatively oxidative and reductive strength of the material is of great significance to the students’ Reduction of the concept and nature of the substance (Figure 1) the oxidation of the material, the strength of the reduction and the loss of electronic capacity related to the number of gains and losses has nothing to do. Oxidation → electronic sex, the more easy to get electrons → the more oxidative Reducing → loss of electron, the easier it is to lose electrons → the more reducibility