<p>This study presents a didactic strategy that seeks to stimulate the motivation of a group of 20 tenth-grade students at the Educational Institution El Nacional de Sahagún (Córdoba, Colombia). The research aimed to develop students’ motivation by using problem situations about density, through a descriptive-type qualitative study. The study determined initial motivational profiles and compared them with data obtained during and after the implementation of a didactic unit, which confirmed the development of motivation at the end of the process. This indicates that chemistry becomes an opportunity to stimulate motivation through problem situations.</p>