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化学是一门以实验为基础的自然科学,直观明了的实验能缩短学生认识物质及其变化规律的过程,扩大学生的认知领域,让学生在有限的时空范围内更大程度地获得化学知识。笔者之所以选择一氧化碳的性质来进行实验探究,是因为经过访谈、问卷调查,发现多数学生对一氧化碳性质最深刻的印象仅停留在毒性上,别的性质则很模糊。仔细分析了一下原因,一方面主要是学生在学习时,看到听到的有关一氧化碳会导致人中毒的内容居多,虽然教师从生命安全的角度去教育学生固然
Chemistry is an experiment-based natural science. Intuitive experiments can shorten the process of students ’cognition of matter and its variation, expand students’ cognitive fields, and give students a greater degree of chemical knowledge within a limited space-time . The author chose the nature of carbon monoxide for experimental exploration because after interviews and questionnaires, most of the students found that the most profound impression on the nature of carbon monoxide only stayed on the toxicity, while others were very vague. A careful analysis of the reasons, on the one hand, mainly students learning to see the majority of people heard about carbon monoxide poisoning content, although teachers from a life-safety perspective to educate students of course