Thursday 12/14 - Emulsifier Review - Elorde Tuliao | Library

Emulsifier Review - Observable Scale (What you can see)

Oil and Water (Vinegar) Mixture

Water and Oil

1

Do you observe (see) layers?

1

Does this mean the oil and water mix or not mix (separate)?

1

Are the oil molecules and water molecules attracted to each other?

Oil, Water (Vinegar) and Lecithin Mixture

Water (Vinegar), Oil, and Lecithin

1

Do you observe (see) layers?

1

Does this mean the oil and water mix or not mix (separate)?

1

Does this mean the oil molecules are attracted to the lecithin (emulsifier) molecules?

1

Does this mean the water molecules are attracted to the lecithin (emulsifier) molecules?

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

Does this model show vinegar molecules and oil molecules attracted (combined, connected) to each other?

1

Does this model show the oil and vinegar (water) molecule mixing or not mixing (staying separate)?

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

Is the lecithin (emulsifier) molecule attracted to the oil molecule?

1

Is the lecithin (emulsifier) molecule attracted to the vinegar molecule?

3

Which of the following is true for this model? Select all that apply (there may be more than one correct answer).

1

Is the sandwich model correct?

0

Why does the oil and water not mix?

0

Thursday 12/14 - Emulsifier Review

Emulsifier Review - Observable Scale (What you can see)

Oil and Water (Vinegar) Mixture

Do you observe (see) layers?

Does this mean the oil and water mix or not mix (separate)?

Are the oil molecules and water molecules attracted to each other?

Oil, Water (Vinegar) and Lecithin Mixture

Do you observe (see) layers?

Does this mean the oil and water mix or not mix (separate)?

Does this mean the oil molecules are attracted to the lecithin (emulsifier) molecules?

Does this mean the water molecules are attracted to the lecithin (emulsifier) molecules?

Nanoscale - Too small to see (atoms and molecules)

Does this model show vinegar molecules and oil molecules attracted (combined, connected) to each other?

Does this model show the oil and vinegar (water) molecule mixing or not mixing (staying separate)?

Is the lecithin (emulsifier) molecule attracted to the oil molecule?

Is the lecithin (emulsifier) molecule 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).

Is the sandwich model correct?

Why does the oil and water not mix?

Why does the oil and water mix?