Water experiments

We talked about heat and molecular movement, and after our discussion, we tried an experiment to demonstrate the principles. We heated some water to boiling, and put it into one cup, and then poured cold water into another cup. Then we dripped food colouring into the two cups and watched what happened. As we had guessed, in the hot water, which had faster molecular movement, the food colouring dispersed very quickly. In the cup of cold water, however, the food colouring dispersed very slowly through the water.