易拉罐装饮料是很多人喜爱的饮料之一,而废弃空罐对于科学课来说还是个很不错的课程资源。用途一:证明空气有热胀冷缩的性质其制作方法是:先将空罐稍许压扁,使里面的空气被挤掉一部分,然后将口用胶密封好。实验时只要将它放入热水 Canned drinks are one of the favorite drinks for many people, and empty cans are a great resource for science classes. Use one: to prove that the air has the nature of thermal expansion and contraction of its production methods are: first empty cans slightly flattened, so that the air is squeezed out part of the inside, and then the mouth sealed with glue. Just put it into the hot water experiment