Water soluble molecules.
Polar molecules are mixed better with water.
Polar Molecules
Oil molecules are nonpolar, so they will not mix with polar water molecules. This characteristic helps when removing oil from water using nets and floating barriers is that oil molecules won't mix with water molecules and the oil molecules float. Because oil floats on water, the oil can be skimmed off the top of the water.
when you mix something such as, sugar or salt, with water, you lower the concentration of water molecules
While water often mixes with other liquids to form solutions, oil and water does not. Water molecules are strongly attracted to each other, this is the same for oil, because they are more attracted to their own molecules they just don't mix together. They separate and the oil floats above the water because it has a lower density.
The relationship is that they do not mix. The molecules in water are attracted to each other and will not mix with the oil molecules which are also attracted to each other and therefore will not mix with the water molecules
Water is polar while oils are non-polar. Molecules that are polar will mix with other polar molecules, and non-polar molecules will mix with other non-polar molecules. Polar and non-polar molecules will not mix.
Polar molecules are mixed better with water.
Polar Molecules
Molecules that are polar(charged) dissolve best in water, while nonpolar molecules do not dissolve well in water.
Water and oil doesn't mix because the water is a polar molecule and oil is a non-polar molecule. There will always be more molecules of water than oil.
Oil molecules are nonpolar, so they will not mix with polar water molecules. This characteristic helps when removing oil from water using nets and floating barriers is that oil molecules won't mix with water molecules and the oil molecules float. Because oil floats on water, the oil can be skimmed off the top of the water.
the answer is that it is luck
when you mix something such as, sugar or salt, with water, you lower the concentration of water molecules
the molecules are donated to water molecules. if a little of the acid remains after it is added to water, then it is a strong acid. if a lot remains, then it is a weak acid. same goes for bases.
I am not a chemist, so I can't give you the "chemical" reason, but I would think that do NOT mix easily with water. My reasoning is that molecules that contain only hydrogen and carbon are called "hydrocarbons", and a very common hydrocarbon is oil. Oil does not mix with water, so I assume that the answer to your question is no.
oil is lighter than water so the oil floats on the water. you can prove it by shaking a bottle with water and oil and shake it then leave it overnight then check it and you'll see why oil and water don't mix .