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在初中化学课本中,关于气态物质的溶解度只是简单指出:“气态物质的溶解度随温度升高而减小,随其压强增大而增大,受温度、压强的影响都很大。”没有安排任何实验,虽然教师可举出许多现实生活中的现象加以解释,如“水烧开前锅底会出现许多气泡”、“打开汽水瓶盖会有气泡冒出”、“下雨前鱼总是游到水面来呼吸”等,但缺乏一定的趣味性、直观性。在此,可补充一个小实验,既直观,学生又感兴趣,有利于学生掌握知识和加深
In junior school chemistry textbooks, the solubility of gaseous substances is simply pointed out: “The solubility of gaseous substances decreases with increasing temperature, increases with their pressure, and is greatly affected by temperature and pressure.” In any experiment, although teachers can cite many phenomena in real life to explain, such as “the water will boil, there will be many bubbles at the bottom of the pot,” “open the soda bottle will have bubbles,” "before the rain always fish Swim to the surface to breathe, etc., but it lacks a certain amount of interest and intuition. Here, a small experiment can be supplemented. It is intuitive, students are interested in it, and it is beneficial for students to acquire knowledge and deepen their knowledge.