[The Nicolas Lémery’s mechanistic approach to chemistry].

Nicolas Lémery was the first chemist to have a mechanistic approach to chemistry. Starting from the acids-bases theory in which two chemicals react with each other in a battle between the pointed acids and the porous bases, he expands his vision to the chemical reaction, which is for him the merging and the transformation of two protagonists into a new identity, resulting in a relationship between the microscopic and the macroscopic.