元素与化合物知识是整个中学化学知识体系的基础,是研究化学理论知识的重要依据。化学基本技能的学习是在掌握元素与化合物知识的基础上进行的。元素与化合物知识涉及面广、内容多、实践性强。学生对其掌握有一定的难度,学习时应注意以下四个要点。要点一:要充分利用已学过的理论来指导、统领元素与化合物知识的学习,并尽可能地加深理解。例如,学习了物质结构理论后,可采用演绎推理概括出某主族元素的通性和性质递变规律,解释元素化合物的结构和 The knowledge of elements and compounds is the basis of the entire middle school chemistry knowledge system and an important basis for the study of chemical theory knowledge. Basic chemistry skills are learned on the basis of knowledge of elements and compounds. Element and compound knowledge covers a wide range of content, practical and strong. Students have a certain degree of difficulty in their grasp, learning should pay attention to the following four points. Point one: to make full use of the theory has been learned to guide and guide the learning of elements and compounds, and deepen understanding as much as possible. For example, after studying the theory of material structure, we can use deductive reasoning to generalize the regularity and nature of the main elements and explain the structure of the elemental compounds