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Extracting vegetable oils
The plant materials are crushed and pressed to squeeze the oil out. Olive oil is obtained this
way.
Sometimes the oil is more difficult to extract and has to be dissolved in a solvent.
Once the oil is dissolved, the solvent is removed by distillation, and impurities…

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It is a combination of two liquids that do not normally mix.
It works if tiny droplets of one liquid spread out throughout the other liquid.
Eg. Milk is made from tiny droplets of animal fat dispersed in water.

Emulsifiers:
They stop the two liquids separating out into two layers.…

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