读者王家航问:“分子间有相互吸引力的作用,那么,为什么‘破镜难重圆’呢?”这个问题确实和分子间的相互作用力有密切的关系.我们知道,任何物体都是由分子(或原子)构成的,而且分子处于不停的热运动中.那么,为什么固体和液体都能保持一定的体积,并不因为分子热运动使它们分崩离析呢?根本的原因是分子间存在着相互吸引的作用.一面玻璃制的镜子不小心碎成两块,我们能否将 Reader Wang Jiahang asked: “The intermolecular attraction has a mutual attraction. So why is it so difficult to break the mirror?” This problem does have a close relationship with intermolecular forces. We know that any object It is made up of molecules (or atoms), and the molecules are in constant thermal motion. So, why are solids and liquids able to maintain a certain volume, and not because of molecular thermal movements that cause them to fall apart? The fundamental reason is the intermolecular There is a mutual attraction. A glass-made mirror is accidentally broken into two pieces. Can we