 As a continuation of her previous work in Spanish, Lombardi (2012) offered a critical analysis of Ilya Prigogine’s proposals. In turn, with Lucía Lewowicz, she analyzed the ontological category of stuff as required by macro-chemistry (Lewowicz and Lombardi 2013). The problem of the categories underlying the chemical discourse was also addressed in the context of the group by Córdoba and Alfio Zambon (2017) for the particular case of nano-materials. A particular mention is needed to Zambon’s (2018) completely new representation of the periodic system based on atomic-number triads.