Emulsifier Review - Observable Scale (What you can see)
Oil and Water (Vinegar) Mixture
Evaluating Models of Emulsifiers
Review
Water and Oil
1
Question 1
1.
Do you observe (see) layers?
1
1
Oil, Water (Vinegar) and Lecithin Mixture
Water (Vinegar), Oil, and Lecithin
1
Question 4
4.
Do you observe (see) layers?
1
1
1
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
1
Question 8
8.
Does this model show vinegar molecules and oil molecules attracted (combined, connected) to each other?
1
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
1
1
3
1
Question 13
13.
Is the sandwich model correct?
0
Question 14
14.
Why does the oil and water not mix?
0
Question 15
15.
Why does the oil and water mix?
Question 2
2.
Does this mean the oil and water mix or not mix (separate)?
Question 3
3.
Are the oil molecules and water molecules attracted to each other?
Question 5
5.
Does this mean the oil and water mix or not mix (separate)?
Question 6
6.
Does this mean the oil molecules are attracted to the lecithin (emulsifier) molecules?
Question 7
7.
Does this mean the water molecules are attracted to the lecithin (emulsifier) molecules?
Question 9
9.
Does this model show the oil and vinegar (water) molecule mixing or not mixing (staying separate)?
Question 10
10.
Is the lecithin (emulsifier) molecule attracted to the oil molecule?
Question 11
11.
Is the lecithin (emulsifier) molecule attracted to the vinegar molecule?
Question 12
12.
Which of the following is true for this model? Select all that apply (there may be more than one correct answer).