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酸碱盐是初中阶段化学的重要内容之一,在教材中占有很大比例,且与四大基本反应类型中的复分解反应密切相关,是教师教学的重点和学生学习的重难点。探究酸碱盐反应后溶液中的物质成分是中考化学试卷中常见的实验探究类试题,分值较高、难度较大,重在考查学生的综合应用和实验探究的能力,属于学生的失分点。笔者经过对近几年中考试卷的分析,发现此类试题有一定的解题规律,本文由一道典型试题引出酸碱盐反应后溶液中溶质成分探究的考点和应对的教学策略。
Acid-base salt is one of the important contents of chemistry in junior middle school. It occupies a large proportion in the teaching materials and is closely related to the metathesis reaction in the four basic types of reactions. It is the focus of teachers’ teaching and the heavy difficulty of student learning. Explore the acid-base salt solution after the reaction of the chemical composition of the material in the test papers is a common test questions, higher scores, more difficult, focusing on students’ comprehensive application and experimental exploration of the ability to belong to the student’s loss point. After analyzing the examination papers in recent years, the author finds that there is a certain law of solution to such questions. This article draws a test of the solute components in solution after acid-base salt reaction from a typical test question and the teaching strategies to deal with it.