The Color Changing Milk activity is a great demonstration of what happens when you combine dish soap and milk. Milk is mostly water but it also contains vitamins, minerals, proteins, and tiny droplets of fat suspended in solution. Fats and proteins are sensitive to changes in the surrounding solution. The secret of the bursting colors is the chemistry of that tiny drop of soap. Dish soap, because of its bipolar characteristics, weakens the chemical bonds that hold the proteins and fats in solution. The soap's polar , end dissolves in water, and its hydrophobic end attaches to a fat globule in the milk. The food coloring molecules are bumped and shoved everywhere, providing an easy way to observe all the invisible activity.
If so, you discovered there are still more fat molecules that haven't found a partner at the big color dance. Add another drop of soap to start the process again.
The Color Changing Milk activity is a great demonstration of what happens when you combine dish soap and milk. Milk is mostly water but it also contains vitamins, minerals, proteins, and tiny droplets of fat suspended in solution. Fats and proteins are sensitive to changes in the surrounding solution. The secret of the bursting colors is the chemistry of that tiny drop of soap. Dish soap, because of its bipolar characteristics, weakens the chemical bonds that hold the proteins and fats in solution. The soap's polar , end dissolves in water, and its hydrophobic end attaches to a fat globule in the milk. The food coloring molecules are bumped and shoved everywhere, providing an easy way to observe all the invisible activity. If so, you discovered there are still more fat molecules that haven't found a partner at the big color dance. Add another drop of soap to start the process again.
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