离子反应的表达方式——离子方程式的书写,一直是高考的热点。因此,教师在课堂教学中,总是特别重视,往往整理出各种类型的离子反应给学生练习,归纳出各种各样的注意事项供学生参考,令人眼花缭乱、心惊胆战。这些做法,可能是受了人民教育出版社的化学1中“离子方程式的书写一般按以下步骤(先写化学方程式)”的影响。其实,如果我们看看山东科学技术出版社的化学1,就会发现其中优先介绍的是“先写电离方程式”。如果我们能够注重比较与研究,就会明白,“离子方程式和化学方程式都能描述化学反应,但离子方程式 Ion reaction expression - ion equation writing, has been a hot college entrance examination. Therefore, teachers in classroom teaching, always pay special attention to, often sort out various types of ion reaction to students practice, summed up a variety of precautions for students to reference, dazzling, frightened. These practices may be influenced by the People’s Education Press Chemistry 1 in the ”ion equation writing generally follow the following steps (first write the chemical equation).“ In fact, if we look at Chemistry 1 of Shandong Science and Technology Press, we will find that priority is introduced in ”Writing ionization equation first". If we can focus on comparison and research, it will be understood that both the ion equation and the chemical equation can describe the chemical reaction, but the ion equation