大学化学 >> 2020, Vol. 35 >> Issue (1): 76-79.doi: 10.3866/PKU.DXHX201905022

化学实验 上一篇    下一篇

婴儿湿巾缓冲能力的测试——一个贴近生活的实验

余凡1,*(),李宝2,*()   

  1. 1 江汉大学化学与环境工程学院, 光电化学材料与器件教育部重点实验室, 武汉 430056
    2 华中科技大学化学与化工学院, 武汉 430074
  • 收稿日期:2019-05-06 录用日期:2019-07-03 发布日期:2019-07-26
  • 通讯作者: 余凡,李宝 E-mail:yufan0714@163.com;libao@hust.edu.cn
  • 基金资助:
    湖北省武汉市教育局(2014006);国家自然科学基金(51403079)

Testing the Buffer Capacity of Baby Wipes: An Experiment Close to Life

Fan Yu1,*(),Bao Li2,*()   

  1. 1 Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education, School of Chemical and Environmental Engineering, Jianghan University, Wuhan 430056, P. R. China
    2 School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
  • Received:2019-05-06 Accepted:2019-07-03 Published:2019-07-26
  • Contact: Fan Yu,Bao Li E-mail:yufan0714@163.com;libao@hust.edu.cn
  • Supported by:
    湖北省武汉市教育局(2014006);国家自然科学基金(51403079)

摘要:

为了有效提升学生在缓冲溶液学习过程中的学习兴趣及积极性,在此推荐一个将现实中的生活用品作为实验对象引入实验课教学过程中的案例。该实验设计将性质实验扩充到婴儿湿巾,将实验内容变为对婴儿湿巾工作原理的验证,而不再是过去简单的酸碱体系的配制及相关验证实验。通过该实验的实施,学生普遍反映能够有效激发其在学习缓冲溶液相关课程中的学习积极性与兴趣,并最终促使学生认知缓冲体系内pH变化的特点及缓冲机理。

关键词: 缓冲溶液, 婴儿湿巾, 实验设计, 学习兴趣

Abstract:

In order to effectively enhance students' interest and enthusiasm in learning buffer solution, a case of introducing real daily necessities into laboratory teaching is recommended. The experimental design extends the property test to the baby wipe, and changes the content of the experiment into the verification of the working principle of wipe, instead of preparation of simple acid-base system and related verification experiments in the past. Through the implementation of this experiment, students generally reflected that it can effectively stimulate their enthusiasm and interest in learning buffer solution related contents, and ultimately promote them to recognize the characteristics and buffer mechanism of pH changes in buffer system.

Key words: Buffer solution, Baby wipe, Experimental design, Learning interest

MSC2000: 

  • G64