%0 Journal Article %T On the Epistemological and Ontological Status of Chemical Relations %A Edgar E. Daza %A Andr¨¦s Bernal %J Hyle : International Journal for Philosophy of Chemistry %D 2010 %I HYLE Publications, Karlsruhe and University of Karlsruhe %X Following several authors, we point out the importance of relations in the conceptual frame of chemistry. We propose that an important characteristic of chemistry is given by the epistemological challenge associated with selectively related entities. We also suggest that internal relation ontologies have been seen by chemists as better suited for assessing this challenge, and that this ontological perspective has played an important role in shaping chemical concepts. %K philosophy of chemistry %K chemical relations %K external relations %K internal relations %K chemical atomism %U http://www.hyle.org/journal/issues/16-2/bernal.pdf