
Emulsions
Interactive Video
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Chemistry
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9th - 10th Grade
•
Practice Problem
•
Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is an emulsion?
A solid dissolved in a liquid
A gas dissolved in a liquid
A coarse dispersion of one liquid in another immiscible liquid
A mixture of two miscible liquids
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is an example of an oil in water emulsion?
Mayonnaise
Milk
Cream
Butter
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of an emulsifying agent in an emulsion?
To increase the viscosity of the emulsion
To form an interfacial film between suspended particles and the dispersion medium
To change the color of the emulsion
To dissolve the dispersed liquid
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a common emulsifying agent for oil in water emulsions?
Metal salts of fatty acids
Long chain alcohols
Proteins
Mineral oils
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can emulsions be broken into their constituent liquids?
By adding more dispersion medium
By heating or using methods like freezing and centrifuging
By stirring continuously
By adding more emulsifying agents
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