Noun
chemical affinity (plural chemical affinities)
(chemistry) All the various attractions between elements and compounds that lead to their reaction.
In the present state of our knowledge, it would be useless to attempt to speculate on the remote cause of the electrical energy... its relation to chemical affinity is, however, sufficiently evident. May it not be identical with it, and an essential property of matter? Humphry Davy
Close relation in a place like London is a personal mystery as profound as chemical affinity. Thousands pass, and one separates himself from the mass to attach himself to another, and so make, little by little, a group. Henry Adams