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RESEARCH ON MICROSCALE CHEMISTRY EXPERIMENTS

微观化学实验研究

基本信息

批准号：
09680184
负责人：
OGINO Kazuko
金额：
$ 2.3万
依托单位：
TOHOKU University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1998
项目状态：
已结题

项目摘要

(1) Development Of Microscale Experiments For High School ChemistryWe have developed micro/small scale experiments for high school chemistry . The experiments developed in this research are on following basic topics : (i) Oxidation-reduction reactions, (ii) Properties of metal ions, (iii) Galvanic cells and electrolysis, (iv) Properties of alcohols. Low price plastic equipment such as 12- and 24-well plates, vials, and bottles are used in these experiments. The characteristics of our experiments are : (i) They are colorful and attractive. (ii) The amount of reagents is small. (iii) The procedures are simple and safe. (iv) The experiments can be performed in a short time. (v) The amount of waste is small and the cost for disposing it is reduced. (vi) The preparation, the clean-up and supervision of experiments are easy and do not require much teacher's time. (vii) No special equipment is required. (viii) The experiments are low cost. (ix) The results of various reactions can be compared easily by the use of appropriate work sheets. This is convenient for students to review and discuss the results.(2) Development Of Microscale Laboratory For College ChemistryMicroscale experiments on reaction rate has been developed by the use of photochromic spiropyrans. Some experiments on qualitative analysis, phenomenon of ion exchange and buffer solutions are also developed.(3) Questionnaire InvestigationFor the purpose of dissemination of small scale experiments, we sent sets of equipment of some smallscale experiments to several high school chemistry teachers, and asked them to carry out student experiments. Questions are made to both teachers and students. Answers from 14 teachers and 840 students of 9 high schools were collected. Their answers confirm the advantages of the small scale experiments mentioned above.

(1)开展微型高中化学实验我们开展了微型/小规模高中化学实验。本研究的实验内容包括：(I)氧化还原反应，(Ii)金属离子的性质，(Iii)原电池和电解，(Iv)醇的性质。在这些实验中使用了廉价的塑料设备，如12孔板和24孔板、小瓶和瓶子。我们实验的特点是：(1)丰富多彩，引人入胜。(2)试剂用量少。(Iii)程序简单安全。(4)可以在短时间内进行实验。(5)废物数量少，处置成本降低。(6)实验的准备、清理和监督都很容易，不需要太多的教师时间。(Vii)不需要特殊设备。()这些实验成本很低。(9)通过使用适当的工作表，可以很容易地比较各种反应的结果。大学化学微型实验室的开发利用光致变色螺吡喃开展了微型反应速率实验。问卷调查为了推广小规模实验的目的，我们向几位高中化学教师发放了一些小规模实验的设备，让他们进行学生实验。对老师和学生都提出了问题。问卷共收集了9所高中的14名教师和840名学生的问卷。他们的回答证实了上述小规模实验的优势。