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模拟灭火器实验(图1)是人教版第7单元课题1“活动与探究”中的一个实验。该实验能很好地让学生感受到化学来源于生活且服务于生活。该实验探究的开展,可以激发学生的兴趣,引导学生思考灭火的原理,并将其应用于生活实践。一、装置缺陷1.装置倒置后,
Simulated fire extinguisher experiment (Figure 1) is an experiment in PEP 7, Task 1, “Activities and Explorations”. This experiment is very good for students to feel that chemistry comes from life and serves life. The experimental exploration carried out to stimulate student interest, guide students to think about the principle of fire fighting, and apply it to life practice. First, the device defects 1. After the device is inverted,