Molecules that have changed our lives. Portrait of an exhibition Authors Pilar González Duarte Institut d'Estudis Catalans Keywords: Scientific exhibition, chemistry and life. Abstract The Institut d’Estudis Catalans (IEC) hosted from November 12, 2021 to April 1, 2022 the exhibition «Molecules that have changed our lives» (https://expo molecules.iec.cat/). The exhibition was organized with the aim of conveying to students that science is understandable and attractive, and essential for progress and for the improvement of the quality of life. The content of the exhibition, which was visited by about three thousand students, included ten panels dedicated to elements, compounds, and chemicals that have been essential in living longer and better: ammonia, anesthetics, cis-platinum, chlorine, silicon dioxide, nitroglycerin, penicillin, polyethylene, soaps and detergents, and vitamin C. To facilitate understanding to a wide audience and for reasons of terminological economics all of them have been designated as molecules. Downloads PDF (Català) Issue No. 30 (2022) Section Monografia: 30 números d’Educació Química EduQ License The intellectual property of articles belongs to the respective authors.On submitting articles for publication to the journal Educació Química, authors accept the following terms:Authors assign to Societat Catalana de Química (a subsidiary of Institut d’Estudis Catalans) the rights of reproduction, communication to the public and distribution of the articles submitted for publication to Educació Química.Authors answer to Societat Catalana de Química for the authorship and originality of submitted articles.Authors are responsible for obtaining permission for the reproduction of all graphic material included in articles.Societat Catalana de Química declines all liability for the possible infringement of intellectual property rights by authors.The contents published in the journal, unless otherwise stated in the text or in the graphic material, are subject to a Creative Commons Attribution-NonCommercial-NoDerivs (by-nc-nd) 3.0 Spain licence, the complete text of which may be found at https://creativecommons.org/licenses/by-nc-nd/3.0/es/deed.en. Consequently, the general public is authorised to reproduce, distribute and communicate the work, provided that its authorship and the body publishing it are acknowledged, and that no commercial use and no derivative works are made of it.Educació Química is not responsible for the ideas and opinions expressed by the authors of the published articles.