会吹泡泡的空瓶
科学实验站
大家都喜欢吹泡泡吧，但是你们见过会吹泡泡的空瓶子吗？今天的科学实验站，我们一起来看看吧。
材料1.洗洁精
2.一杯温水
3.一杯热水
4.空瓶
5.筷子
实验过程
1.在温水中倒入洗洁精并搅拌。
2.将空瓶口倒扣入洗洁精溶液中。
3.将空瓶底部浸入热水中。
注意安全，别烫到手哦！
实验视频
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实验小知识
你知道空瓶子是怎么吹出泡泡的吗？
原来，空气具有受热膨胀的本领。当我们把空瓶放进热水中，空瓶里的空气就膨胀了，把瓶口的肥皂膜顶成了泡泡。
在我们的生活中，也有很多利用空气受热膨胀的例子，比如，在夏天我们不能给轮胎充太多气。如果轮胎中气体太多，气体膨胀会使轮胎内气压过大导致爆胎。
原来，小小的实验还藏着这么有趣的科学知识。快动手做起来，让我们一起开启科学探究之旅吧！
编辑：袁诗倩
审核：蒋忠平
扫码
