Question

Does water and oil mix? Why or why not?​

Answer 1

Answer:

Liquid water is held together by hydrogen bonds. (Liquid water has fewer hydrogen bonds than ice.) Oils and fats not have any polar part and so for them to dissolve in water they would have to break some of water's hydrogen bonds. Water will not do this so the oil is forced to stay separate from the water.

Explanation:

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Answer 2

Explanation:

Molecules of oil are bigger than that of water and therefore do not mix easily. On the other hand molecules of water are polar, i.e. it is positively charged at one end and negatively charged at the other whereas oil molecules do not have; as a consequence they tend to stay away from water molecules. Therefore, oil and water don’t mix together. Water molecules are made up of two hydrogen atoms and one oxygen atom each. Since only opposites attract, the water molecules stick to each other. Polar molecules only dissolve in polar solvents. Similarly, non-polar molecules only dissolve in non-polar solvents. Oil is made up of non-polar molecules having negative charges, or electrons, surrounding the molecule. And so oil molecule stick to each other. Even if you stir water and oil together, they will eventually separate in to two different layers.

But they can be forced to mix together by adding an emulsifier. This emulsion will create a stable mixture of water with droplets of oil spread through it or oil with droplets of water spread through it, does not settle out.

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