Oil and Water Do Not Mix Well Because

Question

Oil and water do not mix well because
A) water is polar and oil is nonpolar.
B) only identical molecules of the same chemical can easily mix.
C) water has hydrogen bonds and oil is polar.
D) water and oil are covalently bonded.

Accepted Answer

Water is a polar molecule, meaning it has a slight positive charge on one end and a slight negative charge on the other end. Oil, on the other hand, is nonpolar and has no charge. Because of the difference in polarity, the two substances do not mix well and tend to separate, with oil forming a layer on top of the water.