Assessing Models of Chromatography

Assessing Models of Chromatography

Multiple Choice

Do now:

True or false, oil and water molecules do not attract to each other.

• true

• false

Why is this GOOD MODEL?

where is there evidence of this?

water and dye molecules attracting

the color molecules spread on the paper

The water molecules climbing on the paper

a key

Open Ended

Give me one reasons why the model on the previous slide is a good model?

Why is this a good model?

where is there evidence of this?

water and dye molecules attracting

the color molecules spread on the paper

The water molecules climbing on the paper

a key

Multiple Choice

True or false, the model on the previous slide shows the water molecules and color molecules attracting?

• true

• false

Why is this a good explanation

What word can give me evidence of...

How the molecules attracted to each other?

Why some molecules went higher than others?

Evidence to back up the explanation?

Multiple Choice

True or false, the explanation on the previous slide did NOT explain why the color molecules moved up the paper.

• true

• false