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高中毕业班的化学复习应当注重化学识知的理解、巩固与深化,同时应着力发展学生的能力。本文拟就这些问题、谈几点设想。一、要依纲扣本、狠抓基础。狠抓基础主要是指以下几方面的内容。一抓准确熟练地使用化学用语与其它工具性的知识,为总复习打好扎实的基础。二抓重点难点、关键性知识的复习、要突出重点、攻破难点。例如电解质一章要把握以下两个问题:(1)离子间的相互作用,重点是离子间的氧化-还原反应、关键在于把握离子与原子的放电顺序。(2)离子间浓度的变化,重点是掌握弱电解质的电离度、水解平衡、pH值及简单计算。三抓综合归纳,
Chemical review of high school graduating class should pay attention to the understanding, consolidation and deepening of chemical knowledge, and should focus on developing students’ abilities. This article proposes some ideas on these issues. First, we must follow the guidelines and pay close attention to the basics. Paying attention to the basics mainly refers to the following aspects. The use of chemical terminology and other instrumental knowledge in an accurate and proficient manner lays a solid foundation for the overall review. Second, grasp key points, review key knowledge, highlight key points, and overcome difficulties. For example, the electrolyte chapter should grasp the following two issues: (1) the interaction between ions, the key is the oxidation-reduction reaction between ions, the key lies in grasping the order of discharge of ions and atoms. (2) Changes in the concentration of ions, the key is to grasp the degree of ionization of weak electrolytes, hydrolysis equilibrium, pH values and simple calculations. Three grasp comprehensive induction,