吹肥皂泡大概是多数小朋友喜欢的活动。本来是无色的液体,吹成泡沫后就变得五颜六色。有的很快就破了,有的却可以“存活”很长时间,甚至掉到了头上都不会立刻破开。这是为什么呢?有没有办法让泡沫永远不破呢?水之所以形成泡泡,其中的“表面活性剂”居功至伟。表面活性剂是一类结构特别的分子,一头喜欢水(称为“亲水头”),一头喜欢空气(叫做“疏水尾”)。当我们吹出一个泡 Blowing soap bubbles is probably the activity most children like. Originally a colorless liquid, after blowing into the bubble becomes colorful. Some will soon be broken, while others may “survive” for a long time, even falling to the head will not be broken immediately. Why is this? There is no way to make the bubble never break it? The reason why the formation of bubbles of water, in which “surfactant ” great achievements. Surfactants are a class of structurally specific molecules, one likes water (called “hydrophilic head ”), like air (called “hydrophobic tail ”). When we blow a bubble