无色物质在水中溶解过程的可视化教学实验  

Visualization Teaching Experiment of Colorless Substance Dissolved in Water

作　　者：萨如拉 贺云[1] 张尊听[1] 董丽英 SA Ru-La;HE Yun;ZHANG Zun-Ting;DONG Li-Ying(School of Chemistry and Chemical Engineering,Shaanxi Normal University,Xi’an 710119,China)

机构地区：[1]陕西师范大学化学化工学院,陕西西安710119

出　　处：《化学教育（中英文）》2023年第17期109-112,共4页Chinese Journal of Chemical Education

基　　金：陕西省创新能力支撑计划项目(2021PT-043);陕西省提升公众科学素质计划项目(2021PSL107)。

摘　　要：在小学科学实验教学中,物质溶解大多是观察有色物质,如红糖、酸梅晶的溶解过程,而学生无法看到无色物质在水中扩散溶解的过程。为了实现无色物质溶解过程的可视化,借助光学方法开发了酒精与水互溶过程、白砂糖在水中溶解过程的演示实验,为学生认知物质溶解现象提供感性认识。In scientific experiment teaching of primary school,material dissolution is mostly for students to observe the dissolution process of colored substances,such as brown sugar and sour plum crystal.However,students cannot see the diffusion and dissolution process of colorless substances in water.In order to realize the visualization of the dissolution process of colorless substances,the demonstrative experiments of the mutual dissolution process of alcohol and water as well as the dissolution process of white sugar in water by means of optical method were developed.These experiments provided perceptual knowledge for students to understand the phenomenon of dissolution of substances.

关 键 词：实验教学 溶解 光照射法 可视化 

分 类 号：G623.6[文化科学—教育学]