现行初中化学课本第二章共选入十个演示实验,其中关于氢气的制取和性质的演示就有八个。可见做好这些演示对于加强“双基”教学、发展学生的智力、培养学生的能力和科学态度以及提高学习兴趣等方面意义重大。笔者仅就“氢气吹肥皂泡”、“氢气和空气的混合点燃爆炸”的实验教学谈谈自己的体会。 In the second chapter of the current junior middle school chemistry textbook, a total of ten demonstration experiments were selected, of which there are eight demonstrations on the preparation and nature of hydrogen. It can be seen that doing these demonstrations is of great significance in strengthening “dual-basic” teaching, developing students’ intelligence, cultivating students’ abilities and scientific attitudes, and improving their interest in learning. The author only talks about his own experience in the experimental teaching of “hydrogen blowing soap bubbles” and “mixed explosion of hydrogen and air”.