多年来我在中学化学总复习中,形成了一套复习模式和方案,实践证实,这样做有利于学生掌握知识,提高能力。下面就化学总复习中的一些思路要点谈五个方面,供大家参考。一、复习中“三基”的强化所谓“三基”指基本知识、基本方法、基本技能三个方面。复习中,总结归纳内容时要给学生点名教材中每章的“三基”,尤其在讲评试题时要体现“三基”,明确“三基”,夯实“三基”。例1.用情性电极电解H_2O和D_2O的混合物,通电一段时间后两极共生成标准状况下气体3.36 L,其质量为1.85 g,求生成的气体中_1~1H、_1~2H原子个数比。解析:按“三基”要求入手,分级讲评、分析该题涉 Over the years, I have formed a review mode and program in the review of middle school chemistry. Practice has confirmed that this will help students master knowledge and improve their abilities. In the following, we will discuss five points in the general review of chemistry for your reference. I. Reinforcement of the “Three Basics” in the Review The so-called “three basics” refer to three aspects: basic knowledge, basic methods, and basic skills. During the review, when summarizing the content, students should be given the “three bases” of each chapter in the named textbooks. In particular, the “three bases” should be reflected in the evaluation questions, and the “three bases” must be clearly defined to consolidate the “three bases”. Example 1. Electrolysis of a mixture of H 2 O and D 2 O with an electrophile electrode. After energization for a period of time, two poles together produce 3.36 L of gas in a standard condition with a mass of 1.85 g. Find the number of _1~1H, _1~2H atoms in the generated gas. ratio. Analysis: According to the “three bases” requirements, classify and analyze the problem