Inserção dos princípios da Química Verde em uma disciplina experimental sob o enfoque Ciência-Tecnologia-Sociedade

Abstract

The proposal of this study came from the need to popularize Green Chemistry through the insertion of its principles in experimental activities into an introductory practical topic of the Chemistry course in a Public Higher Education Institution in Manaus- AM. Besides investigating the possible contributions of the experiments adapted to Green Chemistry, applied and approached through the Science-Technology-Society - STS approach to the teaching-learning process of the students. Thus, four experiments were selected in the teaching plan of the General Experimental Chemistry, where they were duly adapted to the principles of Green Chemistry, from the substitution of reagents for less harmful ones, as well as a reduction of the quantities used in the analyses. In order to guarantee that the experiments were adapted to Green Chemistry, a tool of evaluation of the green degree of the experiments was used, the called metrics of the Green Chemistry, in this specific case, the metric of the Green Star. Previous to the execution of the experiments by the students, a contextualization of environmental problems present in the daily life was carried out, related to the characteristics of the experiment. It should be stressed that this study was based on the qualitative approach, and on the action-research method. The analysis of the data obtained through questionnaires, annotations, among others, was interpreted by the technique of content analysis. Therefore, the results obtained and analyzed showed that the use of the theme of Green Chemistry allied to the Science-Technology-Society approach in experimental activities contributed in many aspects, such as the promotion of contextual and dynamic experimental activities, where it favoured the learning of conceptual contents, procedural and attitudinal. And also for the feasibility of developing didactic experiments in the practical disciplines of the chemistry courses of the Higher Education Institutions of the State of Amazonas, based on the principles of Green Chemistry in order to direct and empower future citizens and professionals, to design and work with the chemistry of a more conscious and sustainable way.