Does butter dissolve in cold water?

Butter does not dissolve in cold water. Butter is a fat, and fats are not soluble in water. This is because fats are nonpolar molecules, while water is a polar molecule. Nonpolar molecules are molecules that do not have a net electrical charge, while polar molecules are molecules that have a net electrical charge. The difference in polarity between fats and water causes them to repel each other, which prevents the fats from dissolving in the water.