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Chinese Journal of Chemical Education  
  Chinese Journal of Chemical Education--2017, 38 (2)   Published: 18 January 2017
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Chinese Journal of Chemical Education. 2017, 38 (2): 0-0.
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Chinese Journal of Chemical Education. 2017, 38 (2): 1-1.
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Application of Chiral Ionic Liquids in Chiral Separation by Capillary Electrophoresis

TURSEN Janar, QIN Wei-Dong, TAN Rui-Kang
Chinese Journal of Chemical Education. 2017, 38 (2): 3-7. ;  doi: 10.13884/j.1003-3807hxjy.2016070105
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This paper briefly introduced the general principle of chiral ionic liquids (CILs) in capillary electrophoretic (CE) chiral separation, and systematically reviewed the recent publications on application of CILs in CE chiral separations in terms of single-and dual-chiral selector systems. Finally, on the basis of overseas and domestic research status, the future prospect of this field was discussed.

Reform Under Background of Individual Development Diversity of College Students: Practice of Differentiated Examination

SUN Hong-Bin, WANG Jun, HE Rong-Huan
Chinese Journal of Chemical Education. 2017, 38 (2): 8-12. ;  doi: 10.13884/j.1003-3807hxjy.2016050083
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In current society, the college students' individual development is diverse. Under this background, the education curriculum reform needs to pay attention to the individual differences between the students, including target of study, ability of learning and capability of passing through examination. This paper put forward an exploration named "differentiated examination" in the final exam of the undergraduate course physical chemistry. The aim is to enhance the distinguishment of the top students and to reduce the difficulty for the moderate students in passing the exam, while the average scores and distribution remain untouched. The detail is adding an "alternative question" in the closed-book final examination and setting up the corresponding scoring rules. After the examination, the utilization of the "alternative questions" and the score distribution were evaluated and analyzed comprehensively. The results revealed that the practice of "differentiated examination" had reached our expectation. Herein, this "differentiated examination" method may provide a new orientation for education reform.

Discussion Teaching Practice on Total Entropy Criterion for Spontaneous Process

XU Hai GUO Yu-Peng
Chinese Journal of Chemical Education. 2017, 38 (2): 13-15. ;  doi: 10.13884/j.1003-3807hxjy.2016060009
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Abstract This paper applied discussion teaching method to the classroom teaching of physical chemistry, deeply discussed the applicable conditions of total entropy criterion of thermodynamic spontaneous process, and finally summarized important conclusion:the total entropy criterion can only be used to judge the reversibility of the process and not judge the spontaneity of the process directly. In order to further determine the nature of spontaneous process, the total energy exchange between system and environment must be combined with. Through the practice of discussion teaching, students could have a deeper understanding of the applicable conditions of the total entropy criterion of thermodynamic spontaneous process, which could lay a good foundation for the following course study.

Electrical Structures of Reactants Facilitates Memorization of Organic Reactions

LIANG Jing, GAO Hong-Feng
Chinese Journal of Chemical Education. 2017, 38 (2): 16-19. ;  doi: 10.13884/j.1003-3807hxjy.2016030076
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According to the bonding styles, organic reactions are classified into three types:free radical reactions, ionic reactions and synergy reactions, and most of the reactions discussed in fundamental organic chemistry belong to ionic reactions. If the charge distribution especially at the nucleophilic sites and the electrical sites in the reactants were appreciated, it would not only help students understand the mechanisms and memorize the reactions discussed in the textbook, but also help to deduce the reactions not discussed before.

Situational Teaching Method for Polymer Chemistry

GUO Li-Hua
Chinese Journal of Chemical Education. 2017, 38 (2): 20-23. ;  doi: 10.13884/j.1003-3807hxjy.2016020060
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This paper discussed situational teaching mode of polymor chemistry based on situation representations with graphic image, animation, experiments and discipline history. The situational teaching mode can help students understand the extension and connotation of knowledge, promote students' learning interests, improve their professional ability and acquire the scientific method to obtain new knowledge.

Simulative Experiment of Automated Synthesis of 18/19F-Radiopharmaceuticals

YAO Xin-Yue, ZHANG Li-Fang, CAO Jian-Hua, ZHANG Yan, QIAO Jin-Ping, LI Song, ZHU Lin
Chinese Journal of Chemical Education. 2017, 38 (2): 24-29. ;  doi: 10.13884/j.1003-3807hxjy.2016110112
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Radiopharmaceuticals is one of the core technologies of positron emission tomography (PET) for diagnostic imaging of various diseases. To make the 18F (T1/2=110 min) labeled radiopharmaceuticals available for imaging, a rapid, efficient and automated preparation process is required. With the rapid development of PET technology, there is a strong demand for radiopharmaceutical professionals all over the world. In order to cultivate students' interests in radiochemical labeling technology and popularize the knowledge of radiopharmaceuticals, teachers transformed scientific research on labeling 18F processes into an unique teaching practice funded by national 973 and 863 programs. Since 2012, a course entitled "chemical comprehensive design experiment for undergraduate students", a simulative experiment of 18/19F-radiopharmaceutical automated synthesis has been designed and enrolled students majored in chemistry. The teaching experiment was completed by the self-developed auto-synthesizer, Synth8 box, that simulated the synthesis of PET radiopharmaceuticals via electronically controlled valves. The box could be disassembled and assembled by students easily. To avoid handling the radioactive 18F, none radioactive 19F processes were carried out by the Synth8 box. Then, the product was analyzed qualitatively and quantitatively by TLC and LC-MS/MS. This course was closely integrated with the practical application of radiopharmaceuticals and transformed the latest scientific research achievements into teaching practice effectively. This experiment expanded the concept of scientific research for undergraduate students, through which it effectively cultivated and stimulated their scientific research literacy and ability. In the past few years, undergraduate students have actively enrolled and enthusiastically contributed to this course. The students always evaluated the course highly.

Cultivating Students' Innovative Consciousness in Inorganic Chemistry Experiment Teaching

HUANG Wei, GAO Ming-Li, LI Wan, LIU Ji-Hong, TIAN Hong-Jun
Chinese Journal of Chemical Education. 2017, 38 (2): 30-33. ;  doi: 10.13884/j.1003-3807hxjy.2016080076
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The cultivation of college students' innovative consciousness and ability is the important content of the teaching reform in colleges. The importance of cultivating students' innovative consciousness during the teaching of inorganic chemical experiment was discussed. Two measures such as the improvement of experiment contents and teaching methods were taken during the teaching process, in order to cultivate students' innovative consciousness and ability.

Preparation and Characterization of Bio-Adsorbent and Study on Adsorption of Cu2+ in Water

LV Lin-Lin, ZHAO Zhen, LUO Wei-Wei
Chinese Journal of Chemical Education. 2017, 38 (2): 34-38. ;  doi: 10.13884/j.1003-3807hxjy.2016060053
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This paper introduced a comprehensive experiment of physical chemistry and analytical chemistry:study on the adsorption of Cu2+ in water by bio-adsorbent. This experiment prepared biomass adsorbent which were analyzed by infrared spectrometer. The effect of pH,time and temperature on the adsorption of of Cu2+ was investigated, and absorption mechanism was studied. This experiment involved the surface adsorption principle of physical chemistry, the application of analysis methods of analytical chemistry, the use of large-scale instruments and some of data processing method, which could not only exercise the students' practical operating ability, but also improve the students' ability to analyze the experimental data.

Teaching Design of Acid-Base Neutralization Titration Based on Theory of MERs

CAI Jing, XU Cheng-Bo
Chinese Journal of Chemical Education. 2017, 38 (2): 39-42. ;  doi: 10.13884/j.1003-3807hxjy.2015030069
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This paper put forward the teaching design of acid-base neutralization titration based on the theory of MERs, setting experimental situation for acid-base neutralization titration, introducing the concept and principle of acid-base neutralization titration and burettes, selecting indicator, demonstrating the experiment and explaining acid-base neutralization titration with NetLogo. The results showed that it could help higher vocational students better understand the knowledge of acid-base neutralization titration.

Teaching Reform of Application of Flavors and Essence Based on Cultivating Thinking Ability

LIN Ping, WANG Dong, QIN Yong-Hua
Chinese Journal of Chemical Education. 2017, 38 (2): 43-47. ;  doi: 10.13884/j.1003-3807hxjy.2016040003
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Taking teaching innovation of application of flavors and essence as an example, this paper designed the teaching contents scientifically and innovated the teaching form, explored preliminarily how to cultivate thinking ability throughout the whole theory teaching and experiment teaching process, how to effectively track in the process of students' autonomous learning in order to strengthen their learning ability and culture their thinking ability. At the same time, this paper researched how to evaluate fairly and impartially of students' autonomous learning effect, and how to scientificly evaluate the degree of learning ability and the level of thinking ability by reforming the examination mode. By the way, this paper summarized the experience of the teaching innovation practice of theory teaching and experiment teaching, and how to reform the cosmetic professional talent training mode.

Teaching Research of Coordination Compound in Medical Basic Chemistry

QIN Xiang-Yang, ZHANG Jun-Na, LAN Ting, LI Ming-Hua, HE Wei
Chinese Journal of Chemical Education. 2017, 38 (2): 48-51. ;  doi: 10.13884/j.1003-3807hxjy.2016060022
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In teaching coordination compound in basic chemistry for medical field, inquiry design based on the problem-oriented teaching mode was employed. With the approach of asking questions-solving problem, such knowledge elements as the definition, structures and applications of coordination compounds could be connected. Meanwhile, the experimental demonstration and medical cases were shown in the problem-oriented mode so teaching effects could be achieved with halved efforts. The results showed that inquiry teaching design based on the problem-oriented mode could not only create a fresh atmosphere of interaction classroom but also cultivate students' awareness of autonomous learning and innovation, stimulate students' strong curiosity, attention and initiative spirit, and then help students to understand and master new knowledge in active learning process.

Application of HPLC in Teachingof Instrumental Analysis Experiment

XIE Yi-Fan, LIU Hui-Zhong, YANG Ruo-Lin, CAI Yu-Xing, JIN Yu-Jie, LI Ning
Chinese Journal of Chemical Education. 2017, 38 (2): 52-54. ;  doi: 10.13884/j.1003-3807hxjy.2016050087
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HPLC method for determination of sophoricoside was established and was applied in the teaching process of instrumental analysis experiment for medical laboratory students. By introduction of the principle of HPLC, experiment operation, experiment report writing, laboratories visiting, animation demo of components of HPLC and discussion on relevant knowledge,students could not only master the basic theory and operation of HPLC, but also improve interests and independence in learning. It also improved teaching quality of instrumental analysis experiment.

Comparative Analysis on Effect of Separating Carotene with Magnesium and Alumina Column Chromatography

JIN Cai-Hong
Chinese Journal of Chemical Education. 2017, 38 (2): 55-57. ;  doi: 10.13884/j.1003-3807hxjy.2016020103
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This study compared the effects of separating carotene with column chromatography to select the better absorbing material between magnesia and alumina. The dried powder of magnesia and alumina as the absorbent separately were analyzed to detach the carotene from spinach leaves. Two methods both showed three bands:carotene, chlorophyll a, chlorophyll b. But each band, especially the carotene band, was more compacted, orderliness, and the edge showed clearer in magnesia experiment than in alumina experiment. Therefore, the magnesia is the better than the alumina as a kind of absorbing material for column chromatograph to separate carotene.

Development of Evaluation Inventory of Non-Verbal Teaching Skills in Chemical Demonstration Experiment

CHEN Di-Mei, YE Jian-Qiang
Chinese Journal of Chemical Education. 2017, 38 (2): 58-62. ;  doi: 10.13884/j.1003-3807hxjy.2016080063
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The scale of non-verbal teaching skills was developed based on literature analysis, questionnaires analysis and individual interviews. Non-Verbal Teaching Skills (NVTSs) were defined as blackboard writing skills, information technology skills, teaching behavior skills, management and organization skills, problem-solving skills, classroom observation skills, and demonstration experiment skills by Special Exploratory Factor Analysis. And the structure of NVTSs was supported by Confirmatory Factor Analysis as well. Moreover, this scale had good reliability and validity to measure chemistry teachers' NVTSs effectively.

Comparison of Theoretical Studies on BX3 Lewis Acidity

CHEN Xiao-Feng, WANG Meng, WU Yong, LI Shun-Li, BAO Jiang-Chun
Chinese Journal of Chemical Education. 2017, 38 (2): 63-69. ;  doi: 10.13884/j.1003-3807hxjy.2015090089
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Boron trihalides are used widely in chemistry as typical Lewis acids. It is well known that the acid strength of boron trihalides increases in the order BF3 < BCl3 < BBr3. This ordering, however, is contrary to that expected from electronegativity differences and steric effects arguments, which suggest that boron trifluoride should be the strongest Lewis acid in the series. Much effort, particularly from the theoretical side, was devoted to shed light on this apparent controversy. In the present contribution the different theoretical studies have been compared.

Ab Initio Calculations on Nature of Interaction of Thiophene with Six Kinds of Hydrides

XIONG Yan, LI Wen-Hui
Chinese Journal of Chemical Education. 2017, 38 (2): 70-76. ;  doi: 10.13884/j.1003-3807hxjy.2016040037
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The nature of interactions of thiophene with six kinds of hydrides (Y) (Y=HF, HCl, H2O, H2S, NH3, PH3) was investigated using ab initio calculations at MP2/aug-cc-pVDZ theoretical level. In contrast with the previous results on similar furan complexes, only the H-pi type complex was observed for thiophene. Variations in complexes geometry can be accounted for the differences in the electrostatic potential on the aromatic ring. To further study the nature of the intermolecular interactions, a Symmetry-Adapted Perturbation Theory (SAPT) energy decomposition analysis was carried out and the results indicated that the dispersion and electrostatic interactions dominate the thiophene complexes.

Popularization of Chemistry Knowledge of Gansu Science Education Institute

LIU Gong-Yuan, LIU Hui-Min, HU Zhi-Gang
Chinese Journal of Chemical Education. 2017, 38 (2): 77-81. ;  doi: 10.13884/j.1003-3807hxjy.2015120060
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Gansu Science Education Institute founded in 1939 was a special agency dedicated to education and extension of scientific knowledge. In the Republic of China, Gansu Science Education Institute overcame many difficulties to popularize science knowledge, used a variety of ways to actively promote scientific knowledge to assist schools with science education and the development of scientific research. Gansu Science Education Institute had made an important contribution to the social and economic development in the Northwest China and also accumulated valuable experience for the development of science and technology in New China.

Chinese Journal of Chemical Education. 2017, 38 (2): 2-2.
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