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北京大学化学系自1955年起,在无机化学讲授中做了一些课堂表演实验。对提高教学质量和学生对无机化学的兴趣上起了一定的作用。但是在所表演的实验内也有一部分实验是失败的,或者是效果不好的。在对表演实验成功或失败的原因进行分析时,只就实验内容来看,成功的实验多半是那些仪器装置复杂的实验,像催化法合成三氧化硫,氨的合成和其他一些类似的实验。另外像一些带有燃烧、爆炸等显著现象的实验也是成功的。在失败的和效果不好的实验中,除去一部分因为准备不够而失败的以外,还有相当多的实验是由于学生看不清实验现象,未能达到预期的效果。这些实验
Department of Chemistry, Peking University since 1955, in the teaching of inorganic chemistry to do some classroom performance experiments. To improve the quality of teaching and students interested in inorganic chemistry played a role. However, there are some experiments that failed in the performance of the experiment, or the effect is not good. In the analysis of the reasons for the success or failure of the performance experiment, the successful experiments are mostly those with complicated instrumentation, such as the synthesis of sulfur trioxide and ammonia by the catalytic method, and other similar experiments. In addition, experiments like some obvious phenomena such as burning and explosion are also successful. In the unsuccessful and ineffective experiments, there are quite a few experiments except part of them failing to prepare enough, because the students can not see the experimental phenomena and fail to achieve the expected results. These experiments