10.12_MM 1.5

MM 1.5 - Separating a Food-Coloring Mixture
Objective: KWBAT use a physical model to observe how molecules separate in chromatography and use those observations to identify similarities and differences in molecules.

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What might have made the dyes (different color dyes) travel up the paper?

Sentence starter: The _______________ made the dyes travel up the paper.

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Why do you think the food coloring separated? Use evidence (what you see) from the picture of the chromatography strip (paper).
Sentence starter: The food coloring separated because ________________

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In our chromatography experiment, what was the test mixture, the medium, and the solvent?

Draggable item		Corresponding Item
Water		Test Mixture - being separated
Food coloring		Medium - test mixture moves through
Chromatography paper		Solvent - helps test mixture move

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What is the test mixture (what is being separated) in this model?

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What represents the medium (what the test mixture moves through) in this model?

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What represents the solvent (what helps the test mixture move) in this model?

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How are the properties of the molecules different from one another?? (Foam sphere molecules, rock molecules, foam peanut molecules, velcro molecules) ?

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PREDICT: Based on the properties of the objects above, list the objects in order based on how far you think they’ll move. Object that will move the least at the top and object will move the farthest on the bottom.

Foam
Velcro
Rock
Spheres

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What properties made the spheres and foam peanuts move far?

Sentence starter: The of the spheres made it move far. The of the foam peanuts made it move far.

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What properties made the rocks and the pieces of velcro move not very far?

Sentence starter: The of the rocks made it move not very far. The of the velcro made it move not very far.

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Using the word attract, explain why the velcro molecules didn’t move very far on the felt.

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What are two observable properties (properties that you can observe with your 5 senses) of the object below?

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What are two observable properties (properties that you can observe with your 5 senses) of the object below?

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MM 1.5 - Separating a Food-Coloring Mixture

What might have made the dyes (different color dyes) travel up the paper?Sentence starter: The _______________ made the dyes travel up the paper.

Why do you think the food coloring separated? Use evidence (what you see) from the picture of the chromatography strip (paper).Sentence starter: The food coloring separated because ________________

In our chromatography experiment, what was the test mixture, the medium, and the solvent?

What is the test mixture (what is being separated) in this model?

What represents the medium (what the test mixture moves through) in this model?

What represents the solvent (what helps the test mixture move) in this model?

How are the properties of the molecules different from one another?? (Foam sphere molecules, rock molecules, foam peanut molecules, velcro molecules) ?

PREDICT: Based on the properties of the objects above, list the objects in order based on how far you think they’ll move. Object that will move the least at the top and object will move the farthest on the bottom.

What properties made the spheres and foam peanuts move far?Sentence starter: The ______________ of the spheres made it move far. The ______________ of the foam peanuts made it move far.

What properties made the rocks and the pieces of velcro move not very far?Sentence starter: The ______________ of the rocks made it move not very far. The ______________ of the velcro made it move not very far.

Using the word attract, explain why the velcro molecules didn’t move very far on the felt.

What are two observable properties (properties that you can observe with your 5 senses) of the object below?

What are two observable properties (properties that you can observe with your 5 senses) of the object below?

What are two observable properties (properties that you can observe with your 5 senses) of the object below?

What might have made the dyes (different color dyes) travel up the paper?

Sentence starter: The _______________ made the dyes travel up the paper.

Why do you think the food coloring separated? Use evidence (what you see) from the picture of the chromatography strip (paper).
Sentence starter: The food coloring separated because ________________

What properties made the spheres and foam peanuts move far?

Sentence starter: The of the spheres made it move far. The of the foam peanuts made it move far.

What properties made the rocks and the pieces of velcro move not very far?

Sentence starter: The of the rocks made it move not very far. The of the velcro made it move not very far.