Colorado Esthetician Written Practice Exam

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What are emulsions?

Solutions formed by immiscible substances
Uniform mixtures of miscible substances
Mixtures of two or more immiscible substances
Suspensions of solids in liquids

The correct answer is: Mixtures of two or more immiscible substances

Emulsions are mixtures of two or more immiscible substances, such as oil and water, that are dispersed throughout each other. In emulsions, one substance is dispersed in the form of small droplets throughout the other substance. This is why option C is the correct answer. Options A and B are not correct because emulsions involve immiscible substances (substances that do not mix evenly) rather than miscible substances (substances that mix completely). Option D is also not correct because suspensions involve solid particles dispersed in a liquid, not two immiscible substances mixed together.