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Emulsions

Emulsions. Learning Outcomes. Write a definition of the key words: Miscible, Immiscible, and Emulsion Give an example of an emulsion(D) Describe what an emulsion is (C) Explain why emulsifiers are an important addition to some foods (B)

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Emulsions

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  1. Emulsions

  2. Learning Outcomes • Write a definition of the key words: Miscible, Immiscible, and Emulsion • Give an example of an emulsion(D) • Describe what an emulsion is (C) • Explain why emulsifiers are an important addition to some foods (B) • Explain how emulsifiers work in terms of intermolecular forces. (A/A*)

  3. Immiscible liquids • An immiscible liquid is a liquid where the two solutions have not mixed properly. Eg oil and water • The oil and water form layers • Is there a way of getting the two liquids to mix?

  4. Emulsifiers • An emulsifier is a substance that causes immiscible liquids to mix • Detergents are emulsifiers. They help when washing up as they allow the fat and water to mix. • Other examples of emulsifiers are: Cayenne pepper, eggs yolk, mustard

  5. (e.g. the egg yolk or the fairy liquid)

  6. (e.g. the egg yolk or the fairy liquid)

  7. Emulsifier molecule Hydrophilic Bonds to water Hydrophobic Bonds to oil

  8. Emulsifiers An emulsifier bonds with both liquids. Helping them to mix.

  9. To finish off… • Oil slicks cause massive amounts of damage to the environment. • How could a detergent help to clean up an oil slick?

  10. Learning Outcomes • Write a definition of the key words: Miscible, Immiscible, and Emulsion • Give an example of an emulsion(D) • Describe what an emulsion is (C) • Explain why emulsifiers are an important addition to some foods (B) • Explain how emulsifiers work in terms of intermolecular forces. (A/A*)

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