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二氧化碳与水反应的探究是一个典型的多因素对比实验,在教学中我简称“四朵小花儿”实验。创设问题情景,引导学生质疑:如下图所示,向一个收集满二氧化碳气体的质地较软瓶中加入约1/3体积的水,立即旋紧瓶盖,振荡。观察现象并分析。
The exploration of the reaction of carbon dioxide and water is a typical multi-factor comparison experiment. In the teaching, I referred to the “four little flowers” experiment. Create problem scenarios and guide students to question: As shown in the figure below, add approximately 1/3 volume of water to a softer bottle that is filled with carbon dioxide gas. Tighten the cap immediately and shake it. Observe the phenomenon and analyze it.