Che-lf on the Shelf, Episode 11 Dance of the Molecules 💃 . 1. Set up two clear glasses/jars 2. Add cold water to one and hot water to the other 3. Add in a few drops of gel food colouring (if the food colouring is too watery then it won't work) 4. Watch the two jars and see how the colour moves around. In which jar do the particles move/spread out faster? . This one explores the fact that particles in a liquid move - even if we cant see it with our own eyes, and that at higher temperatures part