近年来,考试中物质检验的题目出现较多,很多学生得分较低。经分析,失分原因主要是没弄清物质间的关系,没有掌握常见物质的检验方法,对题目中的内容不知所云,从而导致解题思路混乱。针对这一现象,我将在教学中总结出的常见物质的检验方法介绍给大家。一、用一种试剂鉴别多种物质的方法如果待检验的物质之间有明显的酸碱性差异,可选用 In recent years, there have been more problems in material examination in examinations, and many students have lower scores. The analysis, the main reason for losing points is not clear the relationship between substances, do not grasp the test methods of common substances, the contents of the subject unintelligible, leading to confusion of ideas. In response to this phenomenon, I will summarize the teaching of common substances test methods introduced to everyone. A method of identifying a variety of substances with a reagent If there is a clear acid-base difference between the substances to be tested,