Reacció a nivell molecularhttps://visions.upc.edu/ca/steam-a-classe/experiment-3-escoltant-reaccions-quimiques/reaccio-molecular.png/viewhttps://visions.upc.edu/ca/steam-a-classe/experiment-3-escoltant-reaccions-quimiques/reaccio-molecular.png/@@download/image/reaccio molecular.PNG