EVERYDAY SCIENCE

Detailed explanation-1: -They are water insoluble. Lipids are non-polar molecules while water is polar molecule, so there is no way for water to attach to a lipid molecule. Instead, the non-polar lipids will bind to themselves, which is why oils and fats form droplets on the surface of water.

Detailed explanation-2: -Lipids, i.e., fatty molecules, on the other hand, are non-polar, meaning that the charge distribution is evenly distributed, and the molecules do not have positive and negatively charged ends..

Detailed explanation-3: -Lipids are all insoluble in polar solvents like water but highly soluble in the non-polar or weakly polar organic solvents, including ether, chloroform, benzene, and acetone. In fact, these four solvents are often referred to as “lipid-solvents” or “fat-solvents".

Detailed explanation-4: -Most lipids are non-polar (having no charged areas) or only slightly polar, with a very few charged areas. Water mixes with hydrophilic (water-loving) compounds by sticking to their charged groups. Since lipids lack charged groups, the water molecules have nothing to stick to and don’t mix with them.

Detailed explanation-5: -Oils and fats not have any polar part and so for them to dissolve in water they would have to break some of waters hydrogen bonds. Water will not do this so the oil is forced to stay separate from the water.