What sustances do not dissolve in water?

Answer 1

Basically those substance which can displace the water-water interaction with more energetically favorable water-solute interaction are only water soluble.Water is a polar molecule. As we know that like dissolves in like

so only that compound or molecules like alcohol, acetone, acids which are polar in nature these compounds dissolve in water. While non polar compound or molecules like oils,fats will dissolve in non polar solvent like hexane, benzene, toluene etc.

Answer 2

Substances like oil, sand, plastic, and wax do not dissolve in water because they are nonpolar and do not form bonds with water molecules. These substances have different polarities compared to water, which hinders their ability to mix and dissolve in water.

Answer 3

Oil, soap , gravy geranial's, flour and powder are the prime examples that do not dissolve