Chemistry (including Biochemistry)/dispersions

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Question
What is the difference between a colloid and an emulsion?

Answer
Generally, the size of the droplets or particles.  Some people use them interchangably.

colloid - a substance that consists of particles dispersed throughout another substance which are too small for resolution with an ordinary light microscope but are incapable of passing through a semipermeable membrane b : a mixture consisting of a colloid together with the medium in which it is dispersed.  Smoke is a colloid in air.

but it can also be

a gelatinous or mucinous substance found in tissues in disease (as in the thyroid) or normally


emulsion - a system (as fat in milk) consisting of a liquid dispersed with or without an emulsifier in an immiscible liquid usually in droplets of larger than colloidal size

Also, - suspension of liquid within another liquid: a suspension of one liquid in another, for example, oil in water or fat in milk  

Chemistry (including Biochemistry)

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Chemistry (non-biochemistry), environmental science, occupational health and safety, environmental regulation and management, environmental engineering, and wastewater engineering. I'm the Director of Environmental, Health, and Safety and the Director of Research at the Institute of Textile Technology.

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Chemistry (non-biochemistry), environmental science, occupational health and safety, environmental regulation and management, environmental engineering, and wastewater engineering. I'm the Director of Environmental, Health, and Safety and the Director of Research at the Institute of Textile Technology.

Education/Credentials
PhD, MS, BS in Chemistry

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