WEEK 1 - MAGIC MILK
Why does milk move and create swirls of color when liquid dish soap is added?
When liquid dish soap is added to milk with drops of food coloring on the surface, the soap reduces the surface tension of the milk and reacts with the fat. This interaction causes the fat particles in the milk to move and create swirls of color.
How about using different types of milk? Check out this website for more info: