特质的鉴别是初中化学“酸、碱、盐”知识的综合运用,是重点与难点之一.这类题的特点是综合性强,涉及知识点多,同学们在遇到物质鉴别题时,总感觉茫然,无从下手.为帮助同学们学习,现归纳如下.一、物质鉴别题类型物质鉴别题一般有四种类型:1.不用任何试剂鉴别;2.用一种试剂鉴别; Identification of traits is the junior middle school chemistry “acid, alkali, salt ” the comprehensive utilization of knowledge, is one of the key and difficult one of the characteristics of such questions is comprehensive, involving knowledge points, students in the face of material identification problems To help students learn, are summarized as follows: First, the material identification questions type of physical identification questions generally have four types: 1. Without any reagent identification; 2. With a reagent identification;