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在中学化学课程中,演示实验有两处涉及到气体的爆炸。一处是氢气与氧气或空气混合物的热爆炸;另一处是氢气与氯气的热爆炸和光化爆炸。这些都是中学化学教学中比较重要的内容。在教学中配合演示实验是很必要的,不仅可使学生对于爆炸反应获得生动直观的印象,而且还可加强学生对实验安全操作的重视,课堂上进行爆炸演示实验,既要求效果鲜明,使爆炸反应有足够的威力,又必须做到绝对安全,不允许发生任何事故.我们对氢氧爆炸和氢氯爆炸的实验方法进行了一些探索,本文介绍的爆炸实验方法都非常安全,而且效果也是很满意的。
In the middle school chemistry class, there are two demonstration experiments involving the explosion of gases. One is the thermal explosion of hydrogen and oxygen or air mixtures; the other is the thermal and photochemical explosions of hydrogen and chlorine. These are secondary chemistry teaching more important content. It is necessary to cooperate with demonstration experiment in teaching, which can not only vividly and vividly impress the student on the reaction of explosions, but also strengthen the students’ emphasis on the safe operation of the experiment. The experiment of explosion demonstration in the classroom not only requires the obvious effect and makes the explosion The reaction has sufficient power, but also must be absolutely safe, does not allow any accident.We explored the experimental methods of hydrogen and oxygen explosion and hydrogen explosion, the explosion experiment method described in this article are very safe, and the effect is very satisfied.