How to make a science project on the mixtures of oil and water?

4th grader trying to prepare science project on oil and water need information and pictures.How to make a science project on the mixtures of oil and water?
if you want to clearly show how they separate you can add food coloring to the water, and it won't mix with the oil.How to make a science project on the mixtures of oil and water?
research 'surfactants'. Fascinating topic.
it is very important to try this mixture: this compound is very very good for dyehomes called wetting agent for cotton dyes (I prepare it)


add 60% water+15% a material called np9+10% a material called alchohol ethoxilat+ an oil called turpentine7%+strong material called twin i thought...then u have avery very strong compound dose not separate all time...a.hallaj from aleppo-syria 0096394893386
Easy:


Take a poland spring bottle (16 oz size), add half water and half baby oil or vegetable oil. Add food coloring to show the difference between the two liquids and that they do not mix. The bottle can be placed horizontally and used as a ';wave bottle';