This video shows what happens when you add milk to a coke product. It showcases a nasty reaction; you can call it the chemistry of adding a dairy product to a carbonated acidic liquid. The point of this is more a gimmick to maybe build awareness that pop as a rule is pretty bad for you.
- 1 Bottle of Regular (Brown) Soda
- 2% Milk
- Open a fresh, new bottle of brown-colored soda. Coke works great, but any brand of regular cola will do.
- Carefully pour 2% milk into the bottle with the soda until the bottle is completely full.
- Replace the bottle cap and screw it on tightly.
- Now, you will need to exercise some patience. Observe the milk and soda mixture in regular intervals like every half-hour or hour.
The separation happens because of a reaction between phosphoric acid and milk. Phosphoric acid molecules attach to the molecules of milk, increasing the density and separating them from the rest of the liquid. The remaining liquids, having less density than the phosphoric acid and milk molecules, floats on top.