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Chemical Method

Official Question Material
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Official Audio Prompt

Finally, we take a look at how to mix and unmix [blank] at the flick of a switch. Sandrine tells us more. Oil and water don't usually mix, but the new chemical sensitive to light has been added here to [blank] them together. When [blank] to UV light, the chemical changes its structure and becomes soluble in water. This causes two layers to form with the oil floating on top of the water chemical combo. This method should be cheaper than the current [blank] which involves using high energy [blank] .

Sample Answer & Audio Transcript

Finally, we take a look at how to mix and unmix liquids at the flick of a switch. Sandrine tells us more. Oil and water don't usually mix, but the new chemical sensitive to light has been added here to blend them together. When exposed to UV light, the chemical changes its structure and becomes soluble in water. This causes two layers to form with the oil floating on top of the water chemical combo. This method should be cheaper than the current alternative which involves using high energy centrifuges .
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