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复分解反应是中学化学里最基础的化学反应之一。可是,这样重要的反应,课本中设置的内容,并未从实质上说清反应得以进行的原因。在初中化学课本第178页中,只着重从实验出发,分析了反应进行的条件和高一课本第17～19页中对于离子反应的条件不但没有加深,反而不及初三讲得深透。高一课本里着重离子方程式的写法,增加了“二、离子反应发生条件”,把初中讲的生成沉淀、气体和水三种物质变成三条明确的条文,并把水扩大为难电离物质。象这样重复初三所学的内容是不够的。
The metathesis reaction is one of the most basic chemical reactions in middle school chemistry. However, such an important reaction, the content set in the textbook, did not substantially explain the reason for the response to proceed. In the 178th page of junior high school chemistry textbooks, the emphasis is only on experiments. It is analyzed that the conditions for the reactions and the conditions for ion reactions on pages 17 to 19 of the textbooks for senior high school students are not only not deepened, but are less thorough than the third grade. In the high school textbooks, we focused on the formula of ion equations, adding “second and ion reaction conditions,” and converting the three types of substances, sedimentation, gas, and water, which are taught in junior high schools, into three distinct articles and expanding water into difficult ionized materials. It is not enough to repeat what was learned in the third grade like this.