Emulsifier Review - Observable Scale (What you can see)

Oil and Water (Vinegar) Mixture

Water and Oil

null

1

Do you observe (see) layers?

A) Yes, there are layers

B) No, there are no layers

1

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)

1

Oil, Water (Vinegar) and Lecithin Mixture

Water (Vinegar), Oil, and Lecithin

null

1

Do you observe (see) layers?

A) Yes, there are layers

B) No, there are no layers

1

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)

1

Nanoscale - Too small to see (atoms and molecules)

null

Now we are going to look at the oil and water (vinegar) mixtures at the nanoscale (molecules)

Oil and water (vinegar) BEFORE adding Lecithin

null

1

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

1

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

A) Mixing

B) 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

null

1

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

1

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

3

1

null

0

Why does the oil and water not mix?

null

0

Thursday 12/14 - Emulsifier Review

Emulsifier Review - Observable Scale (What you can see)

Oil and Water (Vinegar) Mixture

Oil, Water (Vinegar) and Lecithin Mixture

Nanoscale - Too small to see (atoms and molecules)

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)?

Oil, Water (Vinegar) and Lecithin Mixture

Do you observe (see) layers?

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

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?

Why does the oil and water not mix?

Why does the oil and water mix?

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?

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?

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?

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

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?

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?