通过实验报告评阅及讲评培养学生综合能力的实践

doi:10.3866/PKU.DXHX202109046

Abstract

Abstract:

Experimental report (including preview report) is chief component of the laboratory class. It should reflect phenomenon and result of the experiment, benefit students on promoting knowledge in the process of writing the experimental report. Through reading, commenting and appraising timely the experimental report (including preview report), we can help students master fundamental principle, think deeply experimental questions in the process of improving the experimental report, increase the lab skill and observing ability, and ultimately vastly promote scientific literacy and comprehensive capacity.

Key words: Chemical experiment, Experimental report, Read and appraise

MSC2000:

Zuxin Zhou, Guangping Chang, Sheng Han, Shahua Huang. Practice of Training Students' Comprehensive Capacity in the Process of Reading, Commenting, and Appraising Experimental Report[J].University Chemistry, 2022, 37(7): 2109046.

学生实验报告	教师批改
粗硫酸铜溶液中滴入NaOH溶液有蓝色沉淀，震荡后变为红棕色沉淀	观察较细致。蓝色沉淀的范围？为何又变为红棕色沉淀？
在滴入NaOH溶液处有蓝色沉淀，因在滴入处Cu²⁺和OH^?离子积已超过其溶度积，震荡扩散后其离子积小于溶度积，Cu(OH)₂沉淀溶解，而Fe(OH)₃溶度积很小，沉淀并未溶解，故显红棕色	解释正确，等上了溶解沉淀平衡时计算pH调到3.5–4.0的理论依据
提纯后加热蒸发的蓝色硫酸铜溶液瞬间变为绿色，加硫酸后变为蓝色，在加热后又变为绿色	纯硫酸铜溶液有无可能变绿色？加碱调好溶液pH后加热多长时间？
纯硫酸铜溶液不可能变绿色，一定是杂质没有除净。调好溶液pH后加热了5 min	杂质是什么？是什么状态？加热的目的是什么？为什么强调加热至微沸至少10 min？
杂质肯定是未除净的Fe(OH)₃胶体，是细小颗粒，由于加热不够未全部聚合，部分透过滤纸了。加酸时溶解了，溶液呈硫酸铜的蓝色，加热蒸发时聚集并吸附Cu²⁺，呈绿色	通过不断思考找到了原因，有时间再补做证实一下

1	王灵; 盛寿日; 胡乔生. 大学化学, 2013, 28 (3), 15.
2	赖仕全; 岳莉; 奚白; 余江龙. 辽宁科技大学学报, 2013, 36 (3), 327. doi: 10.3969/j.issn.1674-1048.2013.03.030
3	梁利芳; 范建春; 吴庆轩. 广西教育学院学报, 2014,(5), 179.
4	周祖新. 无机化学实验, 北京: 化学工业出版社, 2014, 7

[1]	Tianran Lin, Li Hou, Jiaxin Dong, Fanggui Ye, Jianniao Tian, Liangliang Zhang, Shulin Zhao, Jianhua Qiu, Xingcan Shen. "Three in One" for the Assistance of Reform of Analytical Chemistry-Related Experiments [J]. University Chemistry, 2022, 37(7): 2109019-.
[2]	Mingli Gao, Yuxi Wang, Wei Wei, Liang Wu, Yaoming Wang, Hongyan Feng. Construction and Application of Featured Chemical Experiment Projects of Membrane Separation and Teaching Resources [J]. University Chemistry, 2022, 37(7): 2109035-.
[3]	Cunwei Qian, Yanqing Wang. "Course Ideology and Politics" Leading Fine Chemical Experiment Teaching Reform [J]. University Chemistry, 2022, 37(3): 2106045-.
[4]	Wenwei Zhang, Changsheng Lu, Yuan Chun, Shouyun Yu, Chengjian Zhu. Construction and Practice of a New Experimental Teaching System for Undergraduate Chemistry Specialty Based on the Cultivation of Innovative Ability [J]. University Chemistry, 2022, 37(2): 2108092-.
[5]	Houjin Li, Liuping Chen, Shuyong Zhang. Current Situation and Development Countermeasure of Chemical Innovation Experiments [J]. University Chemistry, 2022, 37(2): 2108010-.
[6]	Xiaoyi Yan, Qiang Ma, Yue Gu, Shigang Wei, Zhiquan Zhang, Yupeng Guo. Exploration of Chemistry Experiment Teaching and Laboratory Management in the New Media Era [J]. University Chemistry, 2022, 37(2): 2105037-.
[7]	Wang Yiru, Chen Xin, Li Zhao, Deng Shunliu, Yang Lefu, Kong Xiangjian, Kuang Qin, Yang Jing, Weng Yuhua, Ren Yanping. Building an All-Round and Three-Dimensional Ideological Education System for Chemical Experiment Teaching Relying on the National First-Class Chemical Experiment Course [J]. University Chemistry, 2022, 37(10): 2207017-0.
[8]	Dongliang Tian, Qinglin Yang, Kesong Liu, Ying Zhu. Teaching Practice of Innovation Ability Training throughout the Scientific Paper-Type Experimental Report [J]. University Chemistry, 2021, 36(7): 2008001-.
[9]	Hong Lei, Jichuan Huo, Tinghong Zhang, Heyan Huang. Curriculum Reform of "Comprehensive & Design Chemical Experiments" under the Background of Emerging Engineering Education [J]. University Chemistry, 2021, 36(5): 2010083-.
[10]	Xincai Liu, Binbin Dong, Danming Chao. Polyaniline Film for Supercapacitor Featuring Energy Level Visualization: A Proposed Comprehensive Chemical Experiment [J]. University Chemistry, 2021, 36(2): 2003007-.
[11]	Wenjing Song, Chang Liu. A Marking Scheme of Chemical Laboratory Based on Modern Information Technologies [J]. University Chemistry, 2021, 36(2): 2003040-.
[12]	Xuliang Fan, Limei Xu, Lin Ma. Easy Preparation of Tin Phosphide/Ntrogen-Doped Carbon Matrix for Electrochemical Li-Storage: A Recommended Comprehensive Chemical Experiment [J]. University Chemistry, 2021, 36(12): 2102027-.
[13]	Zankai Yan, Liling Zheng. Study on a Comprehensive Chemical Experiment: Determination of Antioxidant Activity of Tea Soup [J]. University Chemistry, 2021, 36(12): 2104042-.
[14]	Shanshan Liu, Yanyang Han, Kai Feng, Wei Cui, Yi Liu, Zhen Zhang, Yonggen Weng, Tao He, Qingzhong Li. Innovative Practice of Comprehensive Experiment Course of Applied Chemistry under OBE Concept [J]. University Chemistry, 2021, 36(11): 2107075-.
[15]	Min Gu,Bin Yue. Synthesis and Characterization of POMs-Based Coordination Polymer: A Comprehensive Chemical Experiment [J]. University Chemistry, 2020, 35(1): 92-97.

Practice of Training Students' Comprehensive Capacity in the Process of Reading, Commenting, and Appraising Experimental Report

RichHTML

PDF

Like

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 1

References 4

Related Articles 15

Metrics

Recommended 0