The Centrality of the periodic table to chemistry is beyond dispute. What seems just as obvious to me is that the table should be seen to play an equally central role in the philosophical understanding of scientific inquiry. This may be a minority opinion; if we look at philosophical discussions of scientific issues broadly, such a view seems unsupported by philosophical practice. Philosophers have been exercised by the problematic aspects of science: revolutions rather than normal scientific practice; aspects of science that are conceptually problematic, for example, quantum mechanics; areas of science that include explanatory accounts that deviate from standard models, for example, evolutionary theory; or aspects of science that raise moral or social issues, such as the biomedical sciences. Chemistry, with a long track record of unsurprising growth, with myriad of applications taken for granted, and with a strongly supported and unifying theory may seem to be just too boring to exercise philosophers interested in resolving puzzles, developing surprising theories, and engendering novel insights. But as I will attempt to show, the most normal of normal sciences, physical chemistry with the periodic table at its core, offers a view of science relevant to central philosophical concerns. In what follows I will offer an overview of three philosophical areas for which the periodic table is salient, while indicating a logical image of a scientific structure of the sort that the table exemplifies. I look first at methodology, and in particular the role of counterevidence in evaluating generalizations. Second I look at how the table permits a reinterpretation of foundational epistemological notions of truth. Finally, I will look at ontology, how the table supports our commitment to the fundamental nature of reality. The basis of my analysis is a model of emerging truth (MET). This metamathematical model is available in a number of publications and I will include only its most basic elements in a technical appendix. In place of the formal construction I will offer the philosophical intuitions it encodes, intuitions that draw upon the structure of chemistry with the periodic table at its core.