在学习《物质结构、元素周期率》一章知识时 ,要注意宏观与微观多联系、理论与实验多联系。从中发现规律 ,有利于强化一些零散知识点的理解记忆和应用 ,对难辨概念、相似问题多比较 ,是辨异识同的最好方法。 When studying the knowledge of chapter “material structure and elemental cycle rate”, we should pay more attention to the relationship between macro and micro, and connect theory with experiment more. It is helpful to strengthen the understanding and memory of some scattered knowledge points and to apply them. It is the best way to distinguish and distinguish between different concepts and similar problems.