酸和碱的概念是初中化学第八章的重点内容 ,深刻理解其内涵、把握其外延是学好该章的基础 .下面介绍几种理解酸、碱概念的方法 .1 分析语句法对酸、碱概念进行语句分析 ,不难发现 ,“全部”、“化合物”是这两个概念的关键词 .其具体含义是 :如果一种化合物电离时生成的阳离子 The concept of acid and alkali is the key content of chapter 8 of junior middle school chemistry. A deep understanding of its connotation and understanding of its extension is the basis for learning the chapter. Here are some ways to understand the concepts of acid and alkali.1 Analytical sentences for acid and alkali The concept of sentence analysis, it is not difficult to find, “all”, “compounds” are the keywords of these two concepts. Its specific meaning is: if a compound ionized cations generated