Milk and Detergent Experiment

On Tuesday Room 16 did an experiment about milk and detergent. Firstly we poured some dark blue topped milk into a plastic container. Next we put two drops of rose pink food colouring into the milk. Then Mrs. Armitage sucked some detergent in a straw but it didn’t go in her mouth. Then she let Evaine drop a tiny bit of detergent on the rose pink food coloring. Amazingly the food colouring started making patterns in the milk. Later we started doing the same thing with cream but the food coloring went slower on the cream. The detergent molecules didn’t know which way to go because they were attracted to water and fat at the same time. The detergent moved slower in the cream because there is more fat in cream than in milk.