大学化学2024，Vol.39Issue(6)：357-365,9.DOI:10.3866/PKU.DXHX202312022
液面蕴张力,滴水藏乾坤
The Hidden World of Surface Tension and Droplets
董禹铜 1许慧玲 1赵与程 1张泽新 1王颖2
作者信息
- 1. 苏州大学材料与化学化工学部,江苏 苏州 215123
- 2. 苏州大学分析测试中心,江苏 苏州 215123
- 折叠
摘要
Abstract
This experiment delves into the common phenomenon of surface tension in everyday life. By systematically optimizing existing methods from the literature,we create solutions of different concentrations using a mixture of glycerol and water,with food coloring added to represent the varying concentrations. Due to the imbalance in evaporation gradient and surface tension,small droplets on hydrophilically treated glass slides exhibit behaviors such as "chasing" and "dancing". These movements reflect a range of physical chemistry phenomena related to surface tension and evaporation. The experiment employs safe and readily available chemicals,with custom-made main devices,making it straightforward and comprehensible. With parental guidance,primary and middle school students,and even kindergarten children,can distinctly observe the chasing and fusion of droplets of different colors. This experiment is eco-friendly,safe,and visually appealing,which is beneficial for cultivating a strong interest in physical chemistry phenomena among the general public,especially primary and secondary school students.关键词
科普实验/物理化学/表面张力/蒸发梯度/液滴追逐Key words
Popular science experiment/Physical chemistry/Surface tension/Evaporation gradient/Droplets chasing分类
化学化工引用本文复制引用
董禹铜,许慧玲,赵与程,张泽新,王颖..液面蕴张力,滴水藏乾坤[J].大学化学,2024,39(6):357-365,9.
