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Q:

Why does oil float on water?

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Oil has different dipole moments than water, meaning that their molecules do not attract. This means that they don't dissolve in each other. Oil is also less dense than water; a volume of oil weighs less then the same volume of water, therefore it floats. more
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Babee.....Oil has density lower than that of water. In other words, same volume of water and oil is taken then weight of water is more than that of oil. That is because of its higher density. So oil floats on water. more
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oil is less dense than water so it floats on water and never gets mixed with it more
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because oil is less dense than water, less dense liquids float on top of more dense liquids. also, you might also need to know that oil doesn't mix with water no matter what. more
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