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高级中学课本(选修)第三册关于催化剂对反应速度影响的演示实验,是以对比观察两只试管中气泡产生的多少和快慢进行判断的。实验现象虽明显,但学生不易观察。做如下改进后,可取得很好的演示效果。
High school textbooks (optional) Volume 3 Demonstration experiments on the effect of catalysts on reaction speeds are based on a comparison of the number and speed of bubbles in two test tubes. Although the experimental phenomenon is obvious, students are not easy to observe. After making the following improvements, you can get a good demonstration effect.