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实验题是高考试题的重要组成部分,其中探究性实验在高考试题中的分值有所增加。本文以教材中出现的实验问题设计为探究性实验,对研究性实验进行初步探索。一、化学实验现象两种解释1.已知氨水的电离度与醋酸的电离度在同温同浓度下相等,溶有一定量氨的氯化铵溶液呈碱性。现向少量的Mg(OH)2悬浊液中,加入适量的饱和氯化铵溶液,固体完全溶解。
Experimental questions is an important part of the college entrance examination questions, of which the exploratory experiment in the college entrance examination questions scores increased. In this paper, the experimental problems that appear in the textbook are designed as exploratory experiments, and the research experiments are tentatively explored. First, the chemical test phenomena two interpretations 1. Known ammonia ionization and acetic acid ionization at the same temperature with the same concentration, a certain amount of ammonia dissolved in ammonium chloride solution was alkaline. Now to a small amount of Mg (OH) 2 suspension, adding an appropriate amount of saturated ammonium chloride solution, the solid completely dissolved.