Glass of Water
In order to observe how molecules move through water, we used food coloring so that we could see the molecules move.
The molecules moved slowly through the water. We waited and watched the food coloring slowly fall to the bottom then swirl and wiggle to the top and sides.
After 20 minutes, the entire glass of water became a uniform color of light blue.
Molecules are so small that we can't see them, but we can see collections of molecules and observe how they move by using food coloring. Molecules are constantly moving. Liquid molecules move slowly and they wiggle and swirl to fill a space.
Resource Used for this Experiment:
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