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在我系七七级无机化学实验的期终考查中,我们设计过这样的选作题:给一包或几包未知物质的样品,让学生用样品做几个指定的实验,并要求根据实验现象,运用所学的知识来判断样品是什么物质。结果学生很感兴趣,在七九级的实验期终考查中,学生反映也很好。这类实验题能让学生通过鲜明生动的实验现象,运用课堂上所学的知识来解决实际问题。使理论知识与实验现象通过学生的积极思
In the end-of-period examination of our seven-seventh grade inorganic chemistry experiment, we designed this selection question: Give a pack or packs of samples of unknown substances, let the students do several specified experiments with the samples, and ask for experiments Phenomenon, using what you have learned to determine what the sample is. As a result, the students were very interested. In the final exam of July 7th, students responded well. This type of experiment allows students to solve practical problems by using vivid knowledge of what they have learned in class. Pass theoretical knowledge and experimental phenomena through students’ positive thinking