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Improved Experiment of the Learning Contents of'Chemical Reaction Rate'Unit:Reaction of Dilute Hydrochloric Acid and Magnesium Ribbons

机译:“化学反应速率”学习内容改进实验:单位:稀盐酸和镁带反应

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The purposes of this study are to analyze the learning contents on the measurement of reaction rate which is introduced in the high school'science'and'chemistry II'textbooks,and to revise the experiment appropriate to the learning contents.We examined 11 kinds of science'textbooks,8 kinds of'chemistry II'textbooks and 11 kinds of teacher's manuals used in Korea and additionally surveyed teachers'opinions on this subject.Most of textbook and teacher's manuals described that'the reaction rate generally decreases through the time',teachers'conception also agreed with it.But most of experimental activities in the textbooks were inadequate to explain the concept that the reaction rate generally decreases with time.We analyzed the reasons and revised the experimental condition to solve this disagreement between the description in textbooks and an experimental result.Then we compared improved experimental result and theoretical prediction data.The improved experiment in this study is expected to help to describe the conception of chemical reaction rate in the textbook more clearly.
机译:本研究的目的是分析高中《科学》和《化学II》教科书中介绍的有关反应速率测量的学习内容,并修改适合该学习内容的实验。我们研究了11种在韩国使用的“科学”教科书,8种“化学II”教科书和11种教师手册,以及对教师对此主题的看法进行的调查。大多数教科书和教师手册都表示“反应率通常会随着时间而降低”,教师的构想也同意这一观点。但是,教科书中的大多数实验活动不足以解释反应率通常随时间而下降的概念。我们分析了原因并修改了实验条件,以解决教科书中的描述与实验之间的分歧。实验结果。然后,我们将改进后的实验结果与理论预测数据进行了比较。有助于在教科书中更清楚地描述化学反应速率的概念。

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