在中学化学的学习内容中，物质的性质及变化占有极其重要的地位。但物质种类多，反应规律多，往往使初学者感到知识零乱，而单纯地记忆；面对高考的学生感到内容多面庞杂。这类知识的学习，需要学生运用逻辑思维，对所学的知识进行符合逻辑的推导和深化，从而获得新的思维方式? In the learning content of middle school chemistry, the nature and change of matter occupies an extremely important position. However, there are many kinds of substances and there are many laws of reaction, which often make beginners feel confused and simply memorize. The students who face college entrance exams feel that the content is manifold. Learning of this type of knowledge requires students to use logical thinking to logically deduce and deepen what they have learned so as to gain new ways of thinking.