What is the new material formed as a result of chemical chanege if i mix the milk and vinegar?

When milk is mixed with vinegar, a chemical change occurs, resulting in the formation of curds and whey. The acetic acid in vinegar causes the proteins in the milk, primarily casein, to coagulate and separate from the liquid, forming solid curds. The remaining liquid is the whey, which contains water, lactose, and other soluble proteins. This process is often used in making cheese.