Milk and Dish Detergent!
Milk (whole milk worked the best)
dish detergent (we used Dawn)
Pour enough milk to cover the bottom of the plate or bowl. Add a few drops of food coloring (I only had the gel kind which might be part of the reason why the reaction did not go like it does on the website). Then dip the Q-tip in the dish detergent and then place it in the milk where the food coloring is. The reaction is suppose to make the colors spread away from the Q-tip and then if you have different colors in the milk they can mix together. Ours did not do that. We originally tried with 2% milk, and then we decided to use whole milk to see if that made a difference. Still no color spreading. Then we decided to just pour some detergent in with the milk to see what would happen.
|One of the students bowls|
This was pretty neat since the milk and detergent do not mix together. You can move the detergent all around in the milk, which the students really enjoyed. At least the colors from the food coloring helped to make the dish detergent really stand out.
|Moving the detergent all around in the milk.|
Has anyone else tried this activity before? What happened when you did it?