The Collaborative International Dictionary
Chemical \Chem"ic*al\, a. Pertaining to chemistry; characterized or produced by the forces and operations of chemistry; employed in the processes of chemistry; as, chemical changes; chemical combinations.
Chemical attraction or Chemical affinity. See under Attraction.
Wiktionary
n. (context chemistry English) All the various attractions between elements and compounds that lead to their reaction.
Wikipedia
In chemical physics and physical chemistry, chemical affinity is the electronic property by which dissimilar chemical species are capable of forming chemical compounds. Chemical affinity can also refer to the tendency of an atom or compound to combine by chemical reaction with atoms or compounds of unlike composition.
Usage examples of "chemical affinity".
As each site on the helix is left with an unpaired base, the correct pairing, cytosine/guanine or adenine/thymine, takes place automatically (the pairs of bases have a natural chemical affinity).
An electro-chemical affinity which bonded one to the other with a unique strength.
The forces of gravitation, electricity, or chemical affinity are only distinguished from one another in that they are differently defined by reason.
Nor is this treated cotton its sole constituent part: more than half of it is another nitrogenous compound, one which I believe to have a chemical affinity to glycerine.
The action of chrysarobin on the skin is not due to germicidal properties, but to its chemical affinity for the keratin elements of the skin.
Our fields, too, may be projected as three-dimensional solids which assume any desired form and have every property of substance except chemical affinity.
You and I just have a chemical affinity, like sodium and chlorine.