Oil and Water

In Kindergarten chemistry, we experimented with liquids and mixing.  Do oil and water mix?  That was our first question that we asked.  The students were so surprised when the oil stayed on top of the water no matter how much they tried to mix it!  What came next was even more startling.  Next we added drops of food coloring.  The food coloring did not mix with the oil and in fact, became dozens of tiny, colorful drops suspended in the oil.  When a drop fell through the oil to the water, it definitely mixed with the water!  The students then did beautiful observational drawings of this experiment.