“酸碱盐”是初中化学的重点内容,也是难点较多的章节,这里涉及的物质多、实验多、化学用语多,概念的逻辑性强,要想获取理想的学习效果,只有吃透基本概念和原理,方能以不变应万变.1.酸电离时一定产生H+,电离时能产生H+的化合物不一定是酸.从酸的定义:“电离时生成的阳离子全部是氢离子的化合物叫酸”得知,酸电离时生成的阳离子有且仅有氢离子,而电离时能产生氢 “Acid-base salt” is a key content of junior high school chemistry, and it is also a difficult chapter. There are many substances involved, many experiments, and many chemical terms. The logic of the concept is strong. In order to obtain the ideal learning effect, only the taste is good. The basic concepts and principles can only be changed. 1. When the acid is ionized, it must produce H+. When ionized, the compound that produces H+ is not necessarily an acid. From the definition of the acid: The ionized cations are all hydrogen. The ionic compound is called “acid.” It is known that the cations generated when the acid is ionized have only hydrogen ions, and hydrogen ions can be generated when ionized.