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2022 Vol. 37,No. 6Published:29 June 2022
Special Subject
  • Suggestions on Teaching Contents and Requirements of Physical Chemistry Laboratory for Chemistry Majors of Higher Chemistry Education
  • Shuyong Zhang, Louzhen Fan, Yuan Chun, Yongmei Liu, Fuping Tian, Yunshan Bai, Shue Song
  • To implement the National Teaching Standard for Chemistry Majors and related requirements proposed by the Instructional Committee of Higher Chemistry Education, Ministry of Education, suggestions of physical chemistry laboratory teaching are made. The teaching goals and contents of the overall and definite physical chemistry laboratory are both defined. The principles for measuring physicochemical parameters and properties are clarified based on some typical experiments with special devices. The laboratory teaching goals including knowledge, ability and quality that should be achieved are suggested. It is of guiding significance for the further reform and construction of physical chemistry laboratory.
  • 2022, 37 (6): 2108061. DOI: 10.3866/PKU.DXHX202108061
Study and Reform of Chemical Education
  • Construction of Standardized Course Syllabus for Inorganic Chemistry Experiment Course Based on Engineering Certification: Taking Chemical and Pharmaceutical Specialty of Hubei University as an Example
  • Ling Li, Kai Wang, Juan Wang, Zheng Wang, Chi Zhang, Wenhua Zhu, Lihong Tian, Yingxi Wang
  • Under the background of emerging engineering education, the standard course syllabus of inorganic chemistry experiment was constructed, on basis of the engineering certification standard and information technology aided teaching in inorganic chemistry experiment of Chemical and Pharmaceutical Specialties at Hubei University. The curriculum objectives were detailed, the graduation requirements and specific index points were related, the target achievement evaluation was achieved, and the quantification of the curriculum evaluation was realized. The construction of standard syllabus can help teachers reduce the differences in experimental teaching, and form a "target-oriented" teaching concept, which helps to improve the quality of course construction. Establishing a standard course syllabus for the first practical course of Chemical and Pharmaceutical Specialties can provide a reference for the standardization of practical courses of chemical and pharmaceutical specialties.
  • 2022, 37 (6): 2107024. DOI: 10.3866/PKU.DXHX202107024
  • Boosting Interdisciplinary Crossing and Integration of Fundamental Chemistry 2 with Catalytic Application as a Link
  • Dongfeng Zhang, Xianyong Lu, Dapeng Liu, Yujie Zhu
  • Fundamental Chemistry 2 is a fundamental subject facing to the freshmen in the "Top Talent Training Program". Regarding to the situation that the students are lacking of study enthusiasm owing to the loosely correlation between the course and their interesting specialty, we put forward to construct elemental chemistry teaching system with interdisciplinary-crossing characteristic by linking the chemical elemental knowledge with the hot research topic and practical industrial application, where the catalytic applications of the element and compounds are as pointcuts. The aim is to endow students with creative- and analytical-thinking. The distinct teaching feature is the combination of theory and practice.
  • 2022, 37 (6): 2107033. DOI: 10.3866/PKU.DXHX202107033
  • Consolidating Chemistry Foundation, Cultivating Innovative Talents: Construction and Exploration of the Inorganic and Analytical Chemistry Laboratory Course
  • Yi Yuan, Ning Li, Yuxiu Wei, Chen Chen, Jianguo Huang, Xufeng Lin, Xiaofeng Li, Congmin Wang, Yong Wang, Peng Wang
  • “Inorganic and Analytical Chemistry Laboratory” is a professional course for chemistry-major first-year undergraduate students of the "Strengthening Basic Disciplines Plan" and "National Basic Subject Talent Training Plan". Adhering to the teaching concept of "improving academic interest and inspiring exploration desire", we first conducted a placement test and subsequently constructed a phased and progressive teaching content framework for fundamental intensive training and the comprehensive and inquiry experiments. By introducing high-level talents into the teaching team and advocating the heuristic and inquiry teaching method, the goals of "top-notch talent training" and "top-notch innovative talent" were realized. The primary aim was to realize the management of the entire process through the "Learning in ZJU" teaching platform and finally create a new all-round, three-dimensional, and science-education integrated chemistry laboratory course.
  • 2022, 37 (6): 2108019. DOI: 10.3866/PKU.DXHX202108019
  • Practice of Inspirational Teaching of Unimolecular Reaction Theory
  • Jia Zhou, Mengjiao Wei
  • Inspirational teaching concept is applied to the teaching of unimolecular reaction theory. Aiming at the teaching difficulties of RRKM theory for unimolecular reaction, this paper introduces scientific research examples in class, designs problems to inspire students' thinking and stimulate class discussion, so that the students can more easily understand the difficult knowledge and improve their ability to analyze and solve problems.
  • 2022, 37 (6): 2201048. DOI: 10.3866/PKU.DXHX202201048
Survey of Chemistry
  • Independent π Single Bond
  • Dan Liu, Li Yue, Li Zhang, Zhongshu Li
  • In chemistry, covalent bonds are divided into two categories:σ and π bonds. A σ bond can exist independently or concurrently with π bonds, as found in multiple bonds. In contrast, textbooks indicate that all π bonds are accompanied by a σ bond. Is it possible for π single bonds to exist independently? Although there are few references, recent studies have shown that compounds that contain a π single bond do exist. Herein, we review the research progress and characteristics of independent π single bonds.
  • 2022, 37 (6): 2108071. DOI: 10.3866/PKU.DXHX202108071
  • N-Heterocyclic Carbene Catalyzed Michael Addition Reaction
  • Ming Zhao, Yurong Xu, Jing Lin, Hu Chen
  • The Michael addition is an important reaction in organic chemistry, and N-heterocyclic carbene (NHC) can also catalyze the Michael addition as an organic catalyst. In this paper, the NHC-catalyzed Michael addition is described in detail, addition of the NHC to the aldehyde forms the Breslow intermediate with nucleophilicity, aldehydes undergo the umpolung from electrophilic to nucleophilic and react with the Michael acceptor. The NHC can also be used as Brønsted base to activate alcohols and undergo Michael addition reactions. The introduction of NHC-catalyzed Michael addition can enrich and extension the content of the Michael addition in undergraduate curriculum. It is also helpful for the students to understand the cutting-edge development of the discipline and stimulate students' interests in learning.
  • 2022, 37 (6): 2108056. DOI: 10.3866/PKU.DXHX202108056
  • Recent Improvements of Several Classical Organic Reactions in Fundamental Organic Chemistry
  • Peng Huang, Chunhua Ge, Daming Feng, Mi Lin
  • The recent improvements of several classical organic reactions are introduced, including Brønsted acid-catalyzed alkyne hydration, ammonia-free Birch reduction, amide synthesis via iodoform reaction, self-propagation mechanism for Beckmann rearrangement, and denitrogenative homocoupling of arenediazonium salts. These reactions are closely associated with the fundamental organic chemistry, and most of them are the original research results by Chinese chemists, which reflects the contributions of domestic scholars to the development of organic chemistry. The sorting out of these reactions is aimed to enrich and expand the teaching content of fundamental organic chemistry for junior undergraduates. It is also hoped that this paper could provide new teaching materials for ideological and political education in organic chemistry course, especially for patriotic education.
  • 2022, 37 (6): 2108091. DOI: 10.3866/PKU.DXHX202108091
Chemistry Laboratory
  • Preparation of Fluorescent Copper Nanoclusters and Hydrogen Peroxide Detection Based on Fluorometry: A Comprehensive Analytical Chemistry Experiment
  • Jiangxue Dong, Yajie Fan, Xiaotong Liu, Hui Li
  • This paper proposed a comprehensive analytical chemistry experiment. The experiment contents including preparation of fluorescent copper nanoclusters, fluorescent spectroscopic characterization, and hydrogen peroxide detection based on fluorometry. This experiment can not only make students understand the fluorescent metal nanoclusters and monitoring methods of hydrogen peroxide, but also allow students to learn operation methods and fundamental principles of magnetic stirring, darkbox type ultraviolet analyzer, lab-dancer and fluorescence spectrophotometer. Moreover, this experiment will make students establish an academic idea of optimizing experimental conditions and comprehensively analyzing problems, which is helpful for cultivating students' comprehensive innovation capability.
  • 2022, 37 (6): 2107031. DOI: 10.3866/PKU.DXHX202107031
  • Comprehensive Experiment of Physical Chemistry Based on “High-Level, Innovation and Challenging”: Taking the Surfactant-Free Microemulsion as an Example
  • Yongmin Zhang, Ye Fan, Xuefeng Liu, Xueyi Hu, Yun Fang
  • In order to achieve the "high-level, innovation and challenging" teaching requirements, a novel comprehensive experiment of physical chemistry involving ternary phase diagram, preparation of colloids, and establishment of reaction kinetics was designed by combining the recent development in colloid and interfacial science and nanomaterials. The current experiment is aimed at high-level learning and innovation cultivation, with room remained for raising challenges. With this experiment, the learning interests of students for physical chemistry can be inspired, the fundamental knowledge can be consolidated, and the understanding and comprehensive application ability of physical chemistry theories can be enhanced. It is favorable for broadening the scientific horizon of undergraduates, and cultivating their innovation ability, exploring spirit and environment awareness.
  • 2022, 37 (6): 2107111. DOI: 10.3866/PKU.DXHX202107111
  • Improvement of Laboratory Teaching and Practice of Determination of Iron with Phenanthroline
  • Yue Zhang, Xiaoyan Wang, Suhua Gao
  • According to the feedback of students and problems in laboratory course in recent years, the improvement of determination of iron with phenanthroline (Phen) is conducted. On the basis of the determination of total Fe with the standard curve, the determination of the molar absorption coefficient of complex compound (Phen-Fe3+, Phen-Fe2+), and the concentration of Fe2+ and Fe3+ of water samples are supplemented. The improvement of experimental content, can not only solve the doubt and enhance students' interests, but also guide students to actively think and cultivate their ability to solve practical problems.
  • 2022, 37 (6): 2107124. DOI: 10.3866/PKU.DXHX202107124
  • Application of a Micro-Flow Regulating Valve in Saturated Vapor Pressure Measurements
  • Shuai Zhang, Jian Zhang, Shaowei Bian, Yaping Zhao, Li Shen, Chunying Xian
  • A micro-flow regulating valve was introduced into an experimental device used for liquid vapor pressure measurements, to enable the accurate and control of the pressure of the system and address the problem of backward air flow into the experimental system. Desirable results were obtained in the experimental process with the use of the micro-flow regulating valve in the experimental device.
  • 2022, 37 (6): 2107062. DOI: 10.3866/PKU.DXHX202107062
  • Design and Exploration of the Interfacial Rheological Properties of Lipopeptide Composite Weak Base ASP Flooding in Experimental Teaching
  • Congying Lu, Jiewen Liu, Wei Shen, Shiyue Ren, Long Tang, Qinghe Gao
  • In this experiment, the changes in the interfacial area and dynamic interfacial tension were measured using a hanging drop method, and the changes in the interfacial tension and expansion modulus with time and concentration were investigated. SPSS software was used to fit the experimental data non-linearly. A three-factor prediction model of the expansion modulus was obtained and the rheological properties of the interface were analyzed. The experiment is simple to perform, has a flexible system design, and is closely related to research projects in this field. It not only enriches the curriculum design of the interface chemistry experiment, but also guides students to pay attention to the actual production, stimulating the students interest for learning, and develops student software application and data analysis abilities, meeting the requirements of application-oriented undergraduate education. This types of a training mode involving the integration of science and education is expected to improve the student ability to deal with practical problems.
  • 2022, 37 (6): 2107106. DOI: 10.3866/PKU.DXHX202107106
  • Preparation of Fe3O4 Magnetic Nanoparticles and Their Application in the Extraction and Determination of Yeast RNA
  • Pingping Wang, Haochen Li, Yu Peng, Xiaomeng Luo, Lihua Zhu, Hong Wang, Fang Chen, Nan Wang
  • Magnetic beads (MBs) have been widely used for the extraction of nucleic acid from biological samples prior to the detection of SARS-CoV-2. In this study, yeast RNA was used as a model substrate to develop an extraction method utilizing nanosized Fe3O4MBs. A new comprehensive chemistry experiment was conducted including the preparation and characterization of Fe3O4, development of an RNA extraction method using MBs, an investigation of the extraction mechanism, and its application in real samples. The experiment is expected to not only improve the students ability to solve practical problems using basic chemical knowledge and experimental methods, but also draw their attention to public concerns and strengthen their sense of social responsibility.
  • 2022, 37 (6): 2108058. DOI: 10.3866/PKU.DXHX202108058
  • Greening of Analytical Chemistry Experiment and Waste Liquid Treatment
  • Wenfang Deng, Zhengfa Fang, Chao Chen, Liang Tan
  • The amount of reagent used in the process of analytical chemistry experiment is large, resulting in more waste liquid, which will cause great pollution to the environment and affect the health of teachers and students. Therefore, the greening of analytical chemistry experiment and the greening treatment of waste liquid are of great significance. Taking the basic experiment of analytical chemistry course in the National Demonstration Center for Experimental Chemistry and Chemical Engineering Education at Hunan Normal University as an example, the green reforms on the analytical experimental projects are carried out by means of miniaturization and resource reuse.
  • 2022, 37 (6): 2107065. DOI: 10.3866/PKU.DXHX202107065
  • Design of a Comprehensive Experiment Based on Polyimide Films
  • Feng Zheng, Xiaogang Wang
  • Taking polyimide (PI), a class of high-performance polymer materials, as an example, a comprehensive experimental project on polymer chemistry has been designed:"The preparation of polyimide films and their performance". The project introduces the "neck sticking" problem of the new material industry to undergraduate teaching, which includes experimental content, such as polymer design, compound synthesis, film processing, and film performance characterization. It covers topics, such as molecular simulations, spectral analysis, and the relationship between polymer structure and performance. Through experimental teaching, students can understand the development of China's new material field, develop a comprehensive knowledge of chemistry and materials, and cultivate scientific research literacy, innovation, and mission bearing spirit.
  • 2022, 37 (6): 2108037. DOI: 10.3866/PKU.DXHX202108037
  • Synthesis of Highly Efficient Ionic Liquid Catalysts and Their Application in Multi-Component Tandem Reactions
  • Ruopu Li, Yize Xu, Zhenglin Wang, Dazhen Xu
  • In order to meet the requirements of the new era of experimental teaching, we introduced "ionic liquids" and "multi-component reactions" into the undergraduate experimental teaching course. Two kinds of 4H-pyran derivatives were prepared via a multi-component tandem reaction catalyzed by an ionic liquid catalyst. The experiment showed the follows advantages:Mild reaction conditions, observable process changes, high stability, and good reproducibility. The catalytic system is inexpensive and can be easily recycled and reused five times without any significant loss in its catalytic activity. This experiment are expected to help students establish the concept of "green chemistry". In addition, this experiment can be divided into several parts, thereby making it suitable for undergraduate teaching.
  • 2022, 37 (6): 2108011. DOI: 10.3866/PKU.DXHX202108011
  • Comprehensive Experiment on the Synthesis of N-2-Naphthalenylacetamide via Beckmann Rearrangement
  • Nana Sun, Like Deng, Yue Sun, Weijin Gu, Bingxiang Wang, Langui Xie
  • Beckmann rearrangement is an important experiment in field of fundamental organic chemistry laboratories for college students. Currently, refluxing the oxime solution in the presence of concentrated sulfuric acid or polyphosphoric acid is commonly used in experimental training classes. In this study, Appel's salt formed in situ by mixing triphenylphosphine and carbon tetrachloride was used to initiate the Beckmann rearrangement, which allowed the reaction to proceed at room temperature under neutral conditions. This experimental solution avoids the use of corrosive acid and high temperature; it features operational simplicity, high yield, and good repeatability, thereby providing a teaching experiment with remarkable safety advantages.
  • 2022, 37 (6): 2108077. DOI: 10.3866/PKU.DXHX202108077
  • Determination of the Transference Numbers of Ions at an Aqueous Hydrochloric Acid Infinite Dilution
  • Xinhua Xu, Meifen Wu, Xiaogang Wang
  • The relationship between the transference numbers of ions and the concentrations of electrolyte solutions is discussed based on the Debye-Hückel-Onsager theory. An experimental method for determining the transference numbers at infinite dilution is also introduced. It is shown that the transference numbers determined as a function of the concentration of the solutions follow a linear fitting function, which can be extrapolated to zero concentration to obtain the transference number at infinite dilution. Therefore, this teaching experiment should be improved to enhance students' understanding of the principles of electrolyte theory.
  • 2022, 37 (6): 2108083. DOI: 10.3866/PKU.DXHX202108083
  • Preparation of Methyl 6,7-Dimethoxy-1,2,3,4-Tetrahydroisoquinoline-3-Carboxylate: A Comprehensive College Medicinal Chemistry Experiment
  • Ju Guo, Yi Gao, Shimin Hu, Ke Fan, Sihui Long
  • A comprehensive medicinal chemistry experiment performed by students in our school majoring in pharmaceutical engineering and pharmaceutics is introduced. In this experiment, L-3,4-dimethoxyphenylalanine methyl ester was synthesized from L-3,4-dimethoxyphenylalanine and methanol by using dichlorosulfoxide as the dehydrating agent at room temperature. Then, methyl-6,7-dimethoxy-1,2,3,4-tetrahydroisoquinoline-3-carboxylate was prepared from L-3,4-dimethoxyphenylalanine methyl ester and paraformaldehyde via the Pictet-Spengler reaction using dichloromethane as the solvent and trifluoroacetic acid as a catalyst. The structure was characterized using 1H NMR spectroscopy and MS. This experiment is beneficial to students for the following reasons:stimulating independent thinking and cultivating research-mindedness, comprehensively training both technical lab skills and structural identification of organic compounds, and mastering the principles and methods of scientific research on drug synthesis.
  • 2022, 37 (6): 2201038. DOI: 10.3866/PKU.DXHX202201038
Between Teacher and Student
  • Exploration of Introducing Simulation & Calculation in Modern Analytical Technology Curriculum
  • Dawei Wen
  • Modern analytical technology is a curriculum of materials analysis and instrumentation. The basic theories of materials analysis contain microscale objects and complicated mathematical contents. It is uneasy for students to understand the knowledge by the traditional education method. Therefore, the simulation of powder X-ray diffraction and Raman scattering spectrum with computers serve as two teaching examples for the education research. The results demonstrate computational simulation explains the interaction of instruments and materials in an easy, intuitive and visual way, helping students in the future work of engineering or scientific research.
  • 2022, 37 (6): 2107104. DOI: 10.3866/PKU.DXHX202107104
  • Teaching Practice of Charge Density Difference in Electronic Structure Analysis
  • Jiafei Zhang, Ge Bai, Yuxing Xu, Wenqing Wu, Ya Liu, Botao Teng
  • Charge density difference (CDD) can investigate the charge redistribution of molecules, clusters and solid materials, as well as the interaction between molecules and solid materials, which has been widely used in electronic structure analysis. Based on the authors' theoretical research and teaching practice of "application of density functional theory in chemistry research", the authors found that the calculation methods and results of charge density difference vary along with the different research objectives. According to the research objectives, the charge density difference can be divided into atom-based, fragment-based, specific object-based and spin density. If one can't understand the concept correctly and establish a reasonable model, it is hard to get the correct electronic structure information. In the present work, authors systematically sort out the types, calculation methods and applicable research system of CDD calculation. Base on the teacher's explanation and demonstration, students' practice, as well as exploratory homework, students can understand and master the electronic analysis method of charge density difference, which provides important support for teaching and scientific research.
  • 2022, 37 (6): 2107125. DOI: 10.3866/PKU.DXHX202107125
  • Learning Experiences with Classroom Teaching of Halogens
  • Guoxian Zhu, Rongkai Pan
  • Based on the characteristics of halogens, classroom teaching is carried out by developing ideological and political educational content containing the history of the discovery of the halogen, permeating the teaching process of elemental chemistry with basic theoretical chemistry, constructing an "online + offline" mixed mode of teaching through the application of network resources, explaining halogens and their compounds with practical applications, guiding students to learn to induce and summarize the learned content, etc., thereby effectively motivating students to learn the scientific character of scientists, stimulating students' enthusiasm for learning, improving the quality of classroom teaching, and enhancing the self-learning ability of students.
  • 2022, 37 (6): 2107126. DOI: 10.3866/PKU.DXHX202107126
  • Discussion on Standard Cells during the Measurement of Cell Potential Using the Compensation Method
  • Huilin Guo, Wenhua Xu
  • As the voltage standard used for a very long time, Weston standard cells have made great contributions to electrochemistry. They also appear in the college-level physical chemistry experiment "Reversible cell potential measurement of electrochemical cells using the compensation method". However, the content on standard cells in physical chemistry textbooks is relatively brief and students are prone to confusing amalgam and metal electrodes. Several aspects of standard cells are presented in this paper. The reactions occurring at the negative and positive electrode, as well as the overall reaction, the factors influencing the reversible cell potential have been analyzed using the Nernst equation. The stability of the reversible cell potential has been discussed in terms of the cell temperature coefficient. Moreover, the reversibility and role of amalgam electrodes have been clarified. The effect of the selection of standard cells on the measurement results has also been discussed. These make up for the shortcomings in teaching and teaching materials, and may provide reference for both peer teaching and student learning.
  • 2022, 37 (6): 2108030. DOI: 10.3866/PKU.DXHX202108030
Self Studies
  • Application of the Polarization Effect
  • Lingjuan Deng
  • Polarization effect plays an important role in electrochemistry. The content arrangement in the traditional textbooks, however, always makes college students feel that the polarization effect is unreasonable for many aspects, particularly in the field of energy storage and transformation. They often intend to think that it is best to eliminate or reduce the polarization effect. However, just as one coin has two sides, the existence of polarization effect is double-edged. The reasonable application of polarization effect is introduced in this paper. The examples of application of polarization effect can make college students understand that advantages and disadvantages depend, and reasonable using the polarization effect can bring a significant amount of revenue.
  • 2022, 37 (6): 2107049. DOI: 10.3866/PKU.DXHX202107049
  • Structure and Aromaticity of Monocyclic Conjugated Polyenes
  • Xiufang Hou, Yuxin Ren, Wenzhuo Dong
  • Based on advanced quantum calculations software, Gaussian, and wavefunction analysis software, Multiwfn, the structures of seven monocyclic conjugated polyenes in the structural chemistry course and cyclic carbon 18 were studied, and a three-dimensional and intuitive molecular space structure of "picture is truth" was developed. The geometric structure, molecular size, electrostatic potential, and aromaticity of each molecule were visualized. This paper is intended to combine textbook knowledge with advanced quantum chemistry software to expand the understanding of aromaticity at the level of quantum chemistry, thereby helping students further deepen their understanding of textbook knowledge and widen their perspective and knowledge.
  • 2022, 37 (6): 2108007. DOI: 10.3866/PKU.DXHX202108007
  • The Simplified Method for Calculating the Number of Valence Shell Electron Pairs and Application of the VSEPR Theory
  • Wei Zhang, Li Ma, Shaoai Xie, Yuling Wang, Hongjin Chen
  • Aiming at the unspecified problem that the number of electrons provided by a halogen, oxygen group, and other p-group non-metallic elements as coordination atoms is 1, 0 etc. in VSEPR theory, this article focuses on explaining the numbers using mathematical formula and presents a simplified method for calculating the valence electron pairs using calculation rules for the central and coordination atoms. This article specifically presents a new method to analyze the hybrid type of organic small molecules with a chain structure using the deducted calculation rules. Furthermore, it discusses how the outermost s-electrons of the long-period p-group non-metallic elements impact the total number of valence electrons via the penetration effect and the mutual influence of multiple bonds to compare the bond angles of covalent molecules using the differences in the electronegativity. This method is expected to be a useful supplement to the application of VSEPR theory.
  • 2022, 37 (6): 2107112. DOI: 10.3866/PKU.DXHX202107112
  • Magical Applications of Number Axis in the Teaching of Electrochemistry
  • Youzhao Lan, Yuejuan Wang
  • Battery symbols, electrode potential, and electrode polarization are very crucial in the teaching of electrochemistry. Using the "number axis", which is an extremely simple model, we can easily teach these three subjects to students. We exemplified the applications of the number axis model to understand the battery symbols, the electrode potential, and its applications, as well as the concept of electrode polarization and its applications.
  • 2022, 37 (6): 2108060. DOI: 10.3866/PKU.DXHX202108060
  • Application of Mathematica in the Teaching of Group Theory in Chemistry
  • Jia Zhou, Mengjiao Wei
  • This paper introduces the application of Mathematica in the teaching of group theory in chemistry courses of colleges and universities. With the powerful mathematical calculation and visualization function of Mathematica, the teaching difficulty of group theory is reduced and the teaching content of group theory is more vivid. It can help students better understand and master molecular symmetry and symmetry operation by vividly displaying symmetrical elements and symmetry operation of molecules, improve students' interest in studying group theory courses, and then improve the quality of teaching.
  • 2022, 37 (6): 2201033. DOI: 10.3866/PKU.DXHX202201033
Chemistry History
  • Approaching the Pioneer of Chinese Chemistry
  • Xiaoxiao Xing, Lijuan Qiu, Hongling Gao, Yingping Quan
  • The development of chemistry in China has a long history, and Chinese chemists have played a great role in promoting the development of chemistry in China and even in the world. Based on the communication between two college students and their journey back to ancient times, this paper describes the main achievements and innovative spirit of several outstanding Chinese chemists in modern and ancient times. It aims to stimulate teenagers' national pride and self-confidence, and cultivate the correct sense of responsibility and patriotism.
  • 2022, 37 (6): 2107123. DOI: 10.3866/PKU.DXHX202107123
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