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Why nanoscale droplets don't coalesce and microscale droplets do

Olive oil and water do not naturally mix.

Source Phys.org AI Summary Updated 1h 36m ago

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Olive oil and water do not naturally mix. Water molecules are polar, having a net electric dipole moment due to the bend angle of about 104.5° between the two oxygen-hydrogen bonds. Olive oil is nonpolar due to its long hydrocarbon chains, which makes it hydrophobic and insoluble in water. Mixtures of the two are called emulsions, and emulsifiers exist that…

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