n Monday, Sept. 25, students were introduced and encouraged to explore the concepts of surface tension and density during Science National Honor Society’s first lab of the year. SNHS officers described the lab, explaining that the low density of food coloring allows the coloring to stay suspended in the fat molecules of the milk, which is then broken up by the liquid dish soap. Surface tension causes the molecules to pull food coloring along in their movement.
After the explanation, students formed groups and were able to play around with food coloring and create designs.
flat bowl or plate
liquid dish soap
Pour the milk into the plate so that it just covers the bottom.
Add a few drops of different colored food coloring onto the milk.
Dip the q-tip into the dish soap container and press in into the middle of the drops of food coloring.
Play around with different colors to create patterns.