Why Does Oil Float on top of Water?

Answer

Oil floats on top of water because it has a lower density. Oil and water does not mix because water molecules are attracted to each other, this is the same for oil. Since they are attracted to their own molecules, they do not mix together.
Q&A Related to "Why Does Oil Float on top of Water"
oil is lighter than water, due the molecule building.
http://wiki.answers.com/Q/Why_does_oil_float_on_to...
Oil is less dense than water, so it floats. Any more questions for ChaCha?
http://www.chacha.com/question/why-does-oil-float-...
Density is a measurement of mass in a given volume; you can calculate density mathematically dividing an object's mass by its volume. The higher an object's density, the more mass
http://www.ehow.com/info_8729757_egg-float-add-sal...
It has less density.
http://answers.yahoo.com/question/index?qid=201103...
1 Additional Answer
Well you know how the story goes. Water and oil don't mix due to their polar and bi polar properties. Oil floats on water basically because it is less dense. It is as simple as that.
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