2.12: 氢键
氢键是形成其他化学键的原子之间的弱引力。其中一个原子是带负电的，就像氧一样，带部分负电荷。另一个是氢原子，它和另一个负电原子成键，带部分正电荷。
氢键控制世界！
由于氢与强电负性原子（如氧或氮）结合时具有非常弱的电负性，因此键中的电子不平等地共享。另一个原子把电子拉到自己的位置，和氢原子分享的时间更短。这给氢原子一个部分正电荷，导致它被一个部分负电荷的原子所吸引。这些弱键的累积效应是改变生命的，赋予水以高热容量、高热蒸发、溶解极性分子的能力、附着力、凝聚力和强表面张力
Related JoVE Videos
Replay
The JoVE video player is compatible with HTML5 and Adobe Flash. Older browsers that do not support HTML5 and the H.264 video codec will still use a Flash-based video player. We recommend downloading the newest version of Flash here, but we support all versions 10 and above.
If that doesn't help, please let us know.
Unable to load video. Please check your Internet connection and reload this page. If the problem continues, please let us know and we'll try to help.
An unexpected error occurred. Please check your Internet connection and reload this page. If the problem continues, please let us know and we'll try to help.
