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元素化合物部分内容多、较领碎、少规律;学习易懂又易遗忘。因此,在复习时,要努力使知识系统化,规律化,重视培养学生分析问题和解决问题的能力,注意唤起学生对旧知识的回忆,并精心设计由基本概念、基础理论与元素化合物知识相互渗透的习题。使学生能够做到在理解的基础上掌握规律,并在掌握规律的基础上能举一反三,灵活应用知识。我在复习中,以周期表为依据进行。先启发学生回忆该族元素在周期表中的位置和原子结构的特点,复习原子结构与元素化合价、氧化性(还原性)强弱以及它们的物理性质的关系,从中掌握变化的规律。然后在各个族中选择一种元素作代表,研究它的制法、性质、用途、签别和保存方法等内
The elemental compound has many parts, more broken and less regular; it is easy to understand and easy to forget. Therefore, when reviewing, we must strive to systematize and regularize knowledge, attach importance to cultivating students’ ability to analyze problems and solve problems, pay attention to arouse students’ memories of old knowledge, and carefully design basic concepts, basic theories, and knowledge of elemental compounds to each other. Infiltration exercises. The students can master the rules on the basis of understanding, and on the basis of mastering the rules, they can use the knowledge from the other side and apply knowledge flexibly. In my review, I performed it on the basis of the periodic table. First, the students are inspired to recall the position and atomic structure of the elements in the periodic table, to review the relationship between the atomic structure and elemental valence, oxidation (reducibility), and their physical properties, and to grasp the laws of change. Then select an element in each family as a representative to study its manufacturing methods, properties, uses, signatures, and preservation methods.