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21-22 MM 1.4

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Last updated 3 months ago
22 questions
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Question 1
1.

If the dye (ink) is a substance, what do you think will happen?

Question 2
2.

If the dye is a mixture, what do you think will happen?

Question 3
3.

Are the water molecules and molecules in the paper towel attracted to each other?

Question 4
4.

Do you think water molecules are attracted to each other (other water molecules)?

Question 5
5.

Are the pieces of pasta in this model the same or different?

Question 6
6.

Are the pieces of pasta in this model the same or different?

Question 7
7.

Are the pieces of pasta in this model the same or different?

Question 8
8.

In this model, each cup contains a different substances (pasta). How many substances (types of pasta) do we have here?

Question 9
9.


In this model, each piece of pasta represents a molecule. What do properties (things we can observe or measure) you notice about the molecules? Type your answer below

Question 10
10.

What properties of the pasta (molecules) caused the pasta mixture to separate when the teacher shook the container? Type your answer below.

Question 11
11.

Picture 1


Make observations! What do you see on the chromatography strip?
(HINT: What has happened to the water? What has happened to the food coloring?)

Question 12
12.

Picture 2

Make observations! What do you see on the chromatography strip?
(HINT: What has happened to the water? What has happened to the food coloring?)

Question 13
13.

Picture 3

Make observations! What do you see on the chromatography strip?
(HINT: What has happened to the water? What has happened to the food coloring?)

Question 14
14.

Based on these observations, is the food coloring a substance or a mixture?

Question 15
15.

How do you know? Explain your answer for number 14.

Question 16
16.

How many different dyes (colors) do you think make up this mixture?

Question 17
17.

Why do you think the molecules in the black food coloring separated on the chromatography strip? Use an observation from the demonstration to explain your thinking:

Exit Ticket
Question 18
18.

Is this model a substance or a mixture?

Question 19
19.

How do you know?

Question 20
20.

Is this model a substance or a mixture?

Question 21
21.

How do you know?

Question 22
22.

Jamie did a chromatography experiment on a marker, and a picture of her chromatography strip is to the right.
Why did the colors separate the way they did?