论文部分内容阅读
前几天小区附近一家超市的饮料罐发生了爆炸,老爸说是因为老板在摆放货物时有晃动的情况,再加之现在天气热、温度高,汽水热胀冷缩就把瓶子给挤爆了。难道汽水还会热胀冷缩?我很好奇,于是去请教陆老师。在他的帮助下,我和同学们进行了一系列实验。首先,我们从学校小卖部买来一瓶普通碳酸汽水,将其倒入一个平底烧瓶中,并迅速把带有玻璃导管的橡皮塞塞住瓶口,然后观察玻璃导管中的汽水在没有受热情况下的起始位置,做好标记。接着我们把平底烧瓶放入热水中,1分钟后观察汽水的液面位置,并再次做好标记。
A few days ago a cell near the supermarket beverage cans exploded, dad said because the boss is shaking the goods placed in the case, coupled with the current hot weather, high temperature, soda blown put the bottle to squeeze It’s Is it still hot and cold water? I am curious, so to ask Lu teacher. With his help, I conducted a series of experiments with my classmates. First, we bought a bottle of regular carbonated water from the school canteen, poured it into a flat-bottomed flask, and quickly plugged the rubber stopper with the glass catheter into the mouth, and then observed the soda in the glass tube without heating The starting position, well marked. Then we put the flat-bottomed flask into hot water, observe the level of the soda one minute later and mark it again.