大学化学 >> 2022, Vol. 37 >> Issue (2): 2106011.doi: 10.3866/PKU.DXHX202106011

所属专题： 化学实验教学和管理

化学实验 上一篇    下一篇

“元素化学实验”中的热致变色现象(二)——部分Cr(III)化合物的热致变色现象及其变色机理探讨

阮婵姿, 许振玲, 潘蕊, 张春艳, 吕银云, 翁玉华, 董志强, 任艳平()   

  • 收稿日期:2021-06-07 录用日期:2021-08-14 发布日期:2021-09-24
  • 通讯作者: 任艳平 E-mail:ypren@xmu.du.cn
  • 作者简介:任艳平, Email: ypren@xmu.du.cn
  • 基金资助:
    2021年度教育部“基础学科拔尖学生培养计划2.0”研究课题(20212058);教育部2020年产学合作协同育人项目(202002060029);首批国家级线下一流课程建设项目

Thermochromic Phenomena in "Elemental Chemistry Experiments" (Ⅱ): Thermochromic Phenomenon and Discussion on Thermochromic Mechanism of Some Cr(III)) Compounds

Chanzi Ruan, Zhenling Xu, Rui Pan, Chunyan Zhang, Yinyun Lü, Yuhua Weng, Zhiqiang Dong, Yanping Ren()   

  • Received:2021-06-07 Accepted:2021-08-14 Published:2021-09-24
  • Contact: Yanping Ren E-mail:ypren@xmu.du.cn

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摘要：

在认识部分Co（II）化合物的热致变色现象及变色机理的基础上，因势利导，创设问题“情境”，即再通过生动直观的演示实验，引导学生进一步认识一些Cr（III）化合物的热致变色现象及其影响因素，引导和启发学生探讨和解释其热致变色的机理。进一步培养学生的观察、分析、判断、归纳、推理、总结和探索规律的能力以及“批判性”思维能力。

关键词: Cr(III)化合物, 热致变色, 影响因素, 机理探讨

Abstract:

Based on the understanding of the thermochromic phenomenon and mechanism of some Co(II) compounds, the problem "situation" was created according to the situation. Namely, through vivid and intuitive demonstration experiments, students are guided to further understand the thermochromic phenomenon of some Cr(III) compounds and its influencing factors, and to explore and explain the thermochromic mechanism. It also furtherly cultivate the students' ability of observation, analysis, judgment, induction, reasoning, summary and exploration of laws and "critical" thinking.

Key words: Cr(III) compounds, Thermochromism, Influencing factors, Discussion on thermochromic mechanism