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化学计算在高考中的比例约为13%,计算题是不少同学认为的难点,不知如何去分析问题,如何去列计算式。其实整体看来,在很多化学计算中都会用到守恒思想,尤其是得失电子守恒。灵活运用“守恒法”能够简化解题过程,从而快速准确地解答题目。现以2012年化学高考中的一些计算题为例,谈一谈“守恒法”在化学计算中的应用。
The proportion of stoichiometry in the college entrance examination is about 13%. Computational questions are a few of the difficulties that students think are difficult to solve. They do not know how to analyze problems and how to calculate formulas. In fact, on the whole, conservatism is used in many stoichiometric calculations, especially the gains and losses of electron conservation. Flexible use of “Conservation Law” to simplify the process of solving problems, in order to quickly and accurately answer the question. Now take the 2012 chemical college entrance exam in some calculation questions as an example, talk about “conservation law ” in the chemical calculation.