| − | '''5 Days untill the glory of the CABAL!''' -Icewe<!-- -->dge | + | {{stub}}A '''hydrogen bond''' is an attraction between [[Chemical polarity|polar molecules]]. They are formed when oppositely charge ends of polar molecules are attracted to one another. This weak attractive force is the hydrogen bond. |
| | + | Hydrogen bonds are responsible for the double-helical structure of [[DNA]], the bouyancy of ice in water, and for the tertiary and quaternary structure of [[Protein|proteins]]. Hydrogen bonds are relatively weak, especially compared with [[Metallic bond|metallic]], [[Ionic bond|ionic]] or [[Covalent|covalent]] bonds. |