加合性(addition)是指一个复合体能够通过把原来分离的要素集合拢来的办法一步一步地建立起来。复合体的特征能够完全分解为各个分离要素的特征。加合性的存在,使得在对有些问题的研究中可以将系统与其构成部分仅仅作为量上相区别的对象加以处理,通过量的分解和组合而实现整体与部分之间的相互过渡。从近几年的高考试题看,利用加合性解决化学问题能力的考查力度不断加大。因此,运用加合思想解决化学问 Addition means that a complex can be built step by step by bringing together the originally separated elements. Complex features can be completely decomposed into the characteristics of each separate element. The existence of the adjectivity makes it possible to treat the system and its components only as the objects of difference in quantity in the study of some problems and realize the mutual transition between the whole and the part through the decomposition and combination of the quantities. In recent years, college entrance examination exam questions, the use of additive ability to solve the problem of chemical problems continue to increase. Therefore, the use of additive thinking to solve chemical problems