Water and oil don't mix

Water and oil/grease do not mix. Water is used to clean, and for drinking and other necessities but it just cannot mix with oil/ grease because oil/grease is hydrophobic meaning that they are water fearing and they will never mix with water. Salt and sugar on the other are hydrophilic they dissolve in the water and if you put the water by the sun or somewhere hot the water will dissolve leaving a white powder which is essentially the salt or sugar depending on what you put in the water. Hydrophilic things dissolve in hydrophilic things and hydrophobic things dissolve in hydrophobic things. Things with similar properties will dissolve in each other but salt and oil will not mix because they have very different properties. Soap and detergents are exceptions because can either act like water or oil and they can mix with both hydrophilic and hydrophobic things. This relates to chemistry because it talks about hydrophobic and hydrophilic things. I never knew that hydrophobic things can mix with each other.

http://www.acs.org/content/dam/acsorg/education/whatischemistry/scienceforkids/articles/a-matter-of-mixing.pdf