When coke and milk are mixed together, after a period of time, precipitation will occur.

When milk and cola precipitate, a chemical reaction will occur, which is called protein denaturation.

The main ingredient of milk is protein, which will appear liquid when the pH is appropriate, and cola is acidic, so it will precipitate when it meets milk.

Extended information:

Nutritional characteristics

Milk and its products are one of the important sources of protein, calcium, phosphorus, vitamin A, vitamin D and vitamin B2 in the diet.

? [2]?

Fresh milk is a kind of complex emulsion mainly composed of water, fat, protein, lactose, minerals and vitamins, among which the water content accounts for 86%~9%, so its nutrient content is relatively low compared with other foods.

The average specific gravity of milk is 1.32, which is related to the solid content in milk.

Except for the fat content, the other components of milk are basically stable, so the specific gravity can be used as a simple index to evaluate the quality of fresh milk.