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近几年参加高中化学调研考试命题,发现学生对实验题不敏感,易失分.现以喷泉实验为背景,谈谈实验题的命题思路和解题分析.喷泉实验是教材中一个有趣而又经典的实验,它将物理学科的压强知识巧妙应用到化学实验中.既能验证物质的溶解性,又能拓展学生的类比、创新思维.本文主要讨论喷泉实验习题的命制思路、解析方法、创新设计.一、以本为纲,课本实验再现1.喷泉实验的操作回顾课本中这样描述:在干燥的圆底烧瓶里充满氨气,用带有
In recent years to participate in the high school chemistry research exam proposition, found that students are not sensitive to the experimental questions, easy to lose points. Now the fountain experiment as a background, talk about the experimental problem proposition ideas and problem solving analysis. Fountain experiment is a fun and Classical experiments, it will be the physical discipline of the clever application of pressure knowledge to chemical experiments, both to verify the material solubility, but also expand the analogy of students, innovative thinking.This paper mainly discusses the fountain of experimental exercises ideas, analytical methods, Innovative design First, the text as the key link, the textbook experiment reproduce 1 Fountain experiment review The textbook description: In a dry round-bottomed flask filled with ammonia, with a