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集气瓶是中学化学实验常用的玻璃器皿，用于演示大气压强实验教学启发性好，且可做到一物多用，实验方法如下：取下集气瓶（口径３．８ｃｍ）的玻璃瓶塞，在瓶口内抹一些凡士林，选一个与瓶口密合的橡皮塞，用打孔器在橡皮塞上打一个小孔并插入一节弯成直角的细玻璃管，将一段
The gas collection bottle is a commonly used glassware for middle school chemistry experiment. It is used to demonstrate that atmospheric pressure experiment teaching is inspiring and can be used for multiple purposes. The experimental method is as follows: Take off the glass bottle stopper of the gas collection bottle (caliber 3.8cm) , Put some vaseline in the bottle mouth, choose a rubber stopper that fits tightly with the bottle mouth, use the hole puncher to make a small hole in the rubber stopper and insert a piece of thin glass tube that is bent at right angles.