摘要
本文将"神秘的燃烧"这个教学情境融入到焰色反应的演示实验中。分析比较目前已有的关于焰色反应演示实验的改进方法,最终选择在乙醇燃烧法中融入"神秘的"燃烧教学情境,并从燃烧基材、无水乙醇与饱和盐溶液比例、滤纸的形状、滤纸的大小、滤纸的厚度、滤纸的类型、燃烧方式等方面探究该改进方法的最优条件,保证焰色现象明显的前提下,还能充分提高实验的神秘性,激发学生的学习兴趣,强化实验效果。
This paper brings the teaching situation of ＂mysterious combustion＂ into the reaction ot tlae Ilame experiment. Comparing to the improvement methods of flame reaction on the magazine, we finally prefer to put ＂mysterious burning teaching situation＂ in ethanol burning. At the same time, these aspects will be considered, such as the basic burning material, no water ethanol and saturated solution scale, the filter papers＇ shape, size, thickness and type . All of those can help to find out the best way to improve our methods. Moreover, the mysterious of the experiment can be improved, students＇ interest in study stimulated, and the experimental effect strengthened.
出处
《湖北第二师范学院学报》
2014年第2期115-117,共3页
Journal of Hubei University of Education
基金
湖北第二师范学院校级教学研究重点项目(2011007)
关键词
神秘的燃烧
教学情境
焰色反应
乙醇燃烧法
mysterious burning
teaching situation
flame reaction
ethanol burning method
