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所谓守恒,就是指化学反应的过程中,存在某些守恒关系,应用守恒关系进行化学解题的方法叫做守恒法,应用守恒法解题,可使问题简捷地展现出来,简化解题过程,尤其是在解选择题时,可节省做题时间,提高解题速率.一、守恒法的分类1.质量守恒(1)宏观表现:变化前后的质量相等(2)微观表现:变化前后同种元素的原子个数相等2.电子守恒凡是有得失电子的化学过程都必须遵循得到电子总数=失去电子
The so-called conservation, refers to the chemical reaction process, there are some conservatism, the relationship between the conservation of chemical solutions to problems known as the conservation method, the conservation solution to the problem, the problem can be simply demonstrated to simplify the problem-solving process, especially First, the classification of conservation law 1. Conservation of mass (1) Macro performance: the quality before and after the change is equal (2) Micro-performance: before and after the change of the same kinds of elements Of the same number of atoms 2. Electron conservation Any gain or loss of electrons in the chemical process must be followed to get the total number of electrons = loss of electrons