Researchers of the Chemical & Biomolecular Engineering Department continued participating in the Science Week of the University of Cantabria, on November 16^th, 2018. In this occasion, we received students of the School Calasanz (Santander). The students had the opportunity to become Chemical Engineers for one day, and they developed several experiments in the laboratories. They program of activities performed by the students included the measurement of ammonia content in wastewaters, building membranes, preparation of the chemical reactions that moves a car, observation of nanoparticles in a microscope and discussion with the researchers about their findings.