The Principle of "Like Dissolves Like" Chemistry follows a guiding rule known as "like dissolves like," which explains solubility based on polarity. This highly ordered state reduces entropy, making the mixed state less stable than the separated state.
Master the Kitchen Science Vinaigrette Emulsion Trick
The natural tendency toward higher entropy and lower energy thus favors the oil and water remaining in two distinct phases. In the human body, lipids are transported in the bloodstream thanks to lipoproteins, which act as emulsifiers to temporarily bind fats and water-based blood.
In the kitchen, chefs use egg yolks or mustard to create stable vinaigrettes, overcoming the natural repulsion through careful technique. For oil to mix with water, energy would need to be put in to break the strong hydrogen bonds between water molecules.
How to Make a Vinaigrette: The Science Behind a Stable Kitchen Emulsion
This polarity allows water molecules to form strong hydrogen bonds with each other, creating a tightly bound network. Non-polar molecules (like oil) have an even distribution of electrical charge.
More About Why doesn't oil mix with water
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