Emulsifier Review - Observable Scale (What you can see)
Oil and Water (Vinegar) Mixture
Water and Oil
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Oil, Water (Vinegar) and Lecithin Mixture
Water (Vinegar), Oil, and Lecithin
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Nanoscale - Too small to see (atoms and molecules)
Now we are going to look at the oil and water (vinegar) mixtures at the nanoscale (molecules)
Oil and water (vinegar) BEFORE adding Lecithin
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Evaluating Models of Emulsifiers: We are going to evaluate (look/grade) the sandwich model and the surrounding model to see which emulsifier model is more correct.
Sandwich Model
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Question 14
14.
Why does the oil and water not mix?
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Question 15
15.
Why does the oil and water mix?
Question 1
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Question 2
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Question 3
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Question 4
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Question 5
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Question 6
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Question 7
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Question 8
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Question 9
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Question 10
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Question 11
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Question 12
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Question 13
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Do you observe (see) layers?
A) Yes, there are layers
B) No, there are no layers
Does this mean the oil and water mix or not mix (separate)?
A) The oil and water mixed
B) The oil and water did not mix (stayed separate)
Are the oil molecules and water molecules attracted to each other?
A) The oil and water molecules are not attracted to each other
B) The oil and water molecules are attracted to each other
Do you observe (see) layers?
A) Yes, there are layers
B) No, there are no layers
Does this mean the oil and water mix or not mix (separate)?
A) The oil and water mixed
B) The oil and water did not mix (stayed separate)
Does this mean the oil molecules are attracted to the lecithin (emulsifier) molecules?
A) The oil molecules are attracted to the lecithin molecules
B) The oil molecules are not attracted to the lecithin molecules
Does this mean the water molecules are attracted to the lecithin (emulsifier) molecules?
A) The water molecules are attracted to the lecithin molecules
B) The water molecules not attracted to the lecithin molecules
Does this model show vinegar molecules and oil molecules attracted (combined, connected) to each other?
A) Vinegar molecules and oil molecules are not attracted to each other
B) Vinegar molecules and oil molecules are attracted to each other
Does this model show the oil and vinegar (water) molecule mixing or not mixing (staying separate)?
A) Mixing
B) Not mixing (staying separate)
Is the lecithin (emulsifier) molecule attracted to the oil molecule?
A) The lecithin molecule is attracted to the oil molecule
B) The lecithin molecule is not attracted to the oil molecule
Is the lecithin (emulsifier) molecule attracted to the vinegar molecule?
A) The lecithin molecule is attracted to the vinegar molecule
B) The lecithin molecule is not attracted to the vinegar molecule
Which of the following is true for this model? Select all that apply (there may be more than one correct answer).