微观反应 宏观显现——原电池实验和碳酸钠与盐酸分步反应的可视化改进  

Visual Improvement of Primary Battery Experiment and Stepwise Reaction of Sodium Carbonate with Hydrochloric Acid

作　　者：蒋晓乾[1] JIANG Xiao-Qian(Hangzhou No.2High School of Zhejiang Province,Hangzhou 310009,China)

机构地区：[1]浙江省杭州第二中学,浙江杭州310009

出　　处：《化学教育（中英文）》2021年第5期77-79,共3页Chinese Journal of Chemical Education

基　　金：杭州市基础教育研究室规划课题(项目编号:L2019231)。

摘　　要：鉴于演示实验的重要教学价值,通过剖析教材中2例演示实验———“原电池实验和碳酸钠与盐酸分步反应”可视化效果不佳的成因,用电极绞合法和粉笔吸附法巧妙地加以改进,可以简单有效地展现实验现象。实验操作简便、现象明显,具有很好的推广价值。In view of the important teaching value of the demonstration experiment,this paper analyzed the causes of the poor visualization effect of two demonstration experiments in the textbook:“primary battery experiment and stepwise reaction of sodium carbonate with hydrochloric acid”,and improved the experiments by the electrode twisting method and the chalk adsorption method,which could easily and effectively show the experimental phenomena.The experiments were easy to operate,with obvious phenomena,and had good promotion value.

关 键 词：演示实验 可视化 原电池 分步反应 实验改进 

分 类 号：G633.8[文化科学—教育学]