实验检验碳酸饮料中是否含有二氧化碳,通常有两种方法,一种是取一瓶“雪碧”等碳酸饮料摇晃一会,然后打开瓶盖,使瓶内气体冲出,再把一块涂有澄清石灰水的玻璃片放在瓶口上方,或把内壁沾有澄清石灰水的小烧杯倒扣在瓶口上方,若澄清石灰水变浑浊,则证明含有二氧化碳。另一种方法是,用注射器从瓶中抽取气体,然后把该气体通入澄清石灰水中来检验二氧化碳。第一种方法的不足是,打开瓶口后,气体冲出很快,散逸较多,若实验节奏把握不好,现象会不明显或无现象出现,况且这种方法用的石灰水量太少,不利于观察现象变化;第二种方法较第一种方法要好些,但也需要多步操作才能完成实验。我们经过分析研究,找到了更加简 Experiment to test carbonated drinks contain carbon dioxide, there are usually two ways, one is to take a bottle “Sprite ” and other carbonated drinks shake for a while, then open the bottle cap, the bottle of gas out, and then a piece of coated Clarify lime water glass on the top of the bottle, or the inner wall with clear lime water small beaker inverted buckle above the bottle mouth, if clarified lime water becomes turbid, then prove that contains carbon dioxide. Alternatively, carbon dioxide may be inspected by extracting the gas from the bottle with a syringe and passing the gas into clarified lime water. The first method is inadequate is that after opening the bottle, the gas rushed out quickly dissipated more, if the experimental pace of grasp is not good, the phenomenon will be obvious or no phenomenon Moreover, this method is too little water with lime, Is not conducive to observe the phenomenon of change; The second method is better than the first method, but also requires multi-step operation to complete the experiment. After analyzing and researching, we found it more concise