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.
Question 15
15.
How do you know? Explain your answer for number 14.
Question 16
16.
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.
Question 19
19.
Question 20
20.
Question 21
21.
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?
If the dye (ink) is a substance, what do you think will happen?
A) The dye (ink) will change colors because the molecules are the different (more one type of molecule)
B) The dye (ink) will NOT change colors because the all molecules are the same (one type of molecule)
If the dye is a mixture, what do you think will happen?
A) The dye (ink) will change colors because the molecules are the different (more one type of molecule)
B) The dye (ink) will NOT change colors because the all molecules are the same (one type of molecule)
Are the water molecules and molecules in the paper towel attracted to each other?
A) Yes, the water molecules and molecules in the paper towel are attracted to each other
B) No, the water molecules and molecules in the paper towel are NOT attracted to each other
Do you think water molecules are attracted to each other (other water molecules)?
A) Yes, the water molecules are attracted to each other
B) No, the water molecules are NOT attracted to each other
Are the pieces of pasta in this model the same or different?
A) The pieces of pasta are the same
B) The pieces of pasta are the different
Are the pieces of pasta in this model the same or different?
A) The pieces of pasta are the same
B) The pieces of pasta are the different
Are the pieces of pasta in this model the same or different?
A) The pieces of pasta are the same
B) The pieces of pasta are the different
In this model, each cup contains a different substances (pasta). How many substances (types of pasta) do we have here?
A) 1
B) 2
C) 3
D) 4
Based on these observations, is the food coloring a substance or a mixture?
A) The black food coloring is a susbstance
B) The black food coloring is a mixture
How many different dyes (colors) do you think make up this mixture?
A) 1 dye
B) 2 dyes
C) 3 dyes
D) 4 dyes
Is this model a substance or a mixture?
A) Substance
B) Mixture
How do you know?
A) It has 1 type of molecule (the same molecules)
B) It has more than 1 type of molecule (different molecules)
Is this model a substance or a mixture?
A) Substance
B) Mixture
How do you know?
A) It has 1 type of molecule (the same molecules)
B) It has more than 1 type of molecule (different molecules)
