初中化学教材中，知识点纷繁复杂。教材是从学生日常生活中比较熟悉的一些化学现象开始，穿插了大量的化学演示实验，从中概括出一些化学基本概念、基本理论和定律；同时又由浅入深地把元素化合物知识及化学计算有计划地安排在教材中。由于教材中每节内容都十分丰富，知识... In junior high school chemistry textbooks, knowledge points are numerous and complicated. Textbooks start with some of the chemical phenomena that students are familiar with in daily life, interspersed with a large number of chemical demonstration experiments, and summarize some basic concepts, basic theories, and laws of chemistry; at the same time, they also have a deep understanding of chemical composition of elements and chemical calculations. Plannedly arranged in teaching materials. Because each section of the teaching material is very rich, knowledge...