An attraction between atoms that allows the formation of chemical substances that contain two or more atoms. These can be "strong bonds" such as ionic or covalent bonds, or "weak bonds" such as dipole-dipole interaction, hydrogen bonding, or London dispersion force.
Adapted from "chemical bonds." (n.d.) Wikipedia.org. (2014). Retrieved November 20 2015 from http://encyclopedia.thefreedictionary.com/chemical+bonds