EXPLORING THE RELATIONS AMONG MISCIBILITY, POLARITY, STRUCTURE AND MOLECULAR INTERACTION

This work explores the relation among the concepts miscibility, polarity, structure and molecular interaction presented by students from the third year of a high school. They were challenged to trace a strategy to explore the comportment of the alcohols: ethanol, propan-1-ol, butan-1-ol, pentan-1-ol and 2-methylpropan-2-ol in aqueous systems. With the solutions and glassware necessary, students realized that, even though they were polar molecules, some of these are not miscible in water. Inside the multimodal conception was possible to diagnose the learning and misconceptions behaviour by activities of investigation by practice, modelling and discursive production. The relation between polarity, interaction solution-solvent and the molecular structure were the argumentative tools used by students to explain the results obtained in the experiment.