Transcript Densities of Liquids (g/mL)

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Deciphering Density Columns
Densities of Liquids (g/mL)
 Light Corn syrup 1.37
 Alcohol 0.87
 Water 1.0
 Baby Oil 0.82-0.86
 Vegetable Oil 0.90
 Dish Soap 1.04
Reflect and Connect pg. 73 #1-3
 1a. Use the data table to determine the identity of
the unlabeled samples.
Material
Volume of
liquid
Mass of cylinder Mass of cylinder
w/ sample
alone
Sample A
100 mL
142.54 g
2.54 g
Sample B
100 mL
93.21 g
2.54 g
Sample C
100 mL
83.44 g
2.54 g
Sample A is Light Corn syrup. The sample ahs a mass of 140.og and a volume of
100 mL . D=m/v. Density 1.4 g/mL which is close to the density of corn syrup
Sample B is Vegetable Oil. The sample ahs a mass of 90.67g and a volume of 100
mL . D=m/v. Density 0.91 g/mL which is close to the density of vegetable oil
Sample C is Baby Oil. The sample ahs a mass of 83.44g and a volume of 100 mL .
D=m/v. Density 0.83 g/mL which is close to the density of Baby Oil
Reflect and Connect
 1b. Is it possible to determine the identity of an
unknown sample using only mass and volume data?
Explain.
Mass and volume change with the sample size. You would not be able to
determine the identity of an unknown sample using only mass and volume.
 1c. What other information about the unlabeled
samples would be helpful as you try to identify them?
Explain why that new info would be helpful.
It would be helpful to have information about color, odor, and visocosity.
Reflect and Connect
 1d. If 2 samples have the same density, are they the
same material? Explain your answer by using and
example outside of school.
If 2 samples have the same density they might be the same material. To be
certain of their identity, it would be helpful to have more information. If they do
not have the same density they are probably not the same material (they could be
porous and the other dense even though they are made from the same material
or just two material with the same density).
 2. Density is a characteristic physical property of a
material. Use your recent experiences to describe
what that means
A physical characteristic property is one that can be used to help identify material.
It does not matter how much of a material you have- the density will remain the
same.
Reflect and Connect
 3. Use your graph from I and II to answer the
following: What would you predict is the density of
1L of Isopropyl alcohol? Of 1.35 kg of wax? Explain
your answer using slope and density.
The density of 1,000mL of alcohol should be the same as any size sample of that
material. Therefore, the density should be close to 0.87 g/mL. The same concept
works for the wax. The density of the wax should be 0.88-0.91g/mL. The density
way density shows up is as the slope of a mass v volume graph. The fact that the
slope is constant supports this idea.
Explain: Mind Over Matter
UPDATE YOUR
TOC
Reminder you do not need to write out the questions for the questions in the
“Process and Procedures”
Process and Procedures Pg. 74-78; # 1-5
 Make a T-Table read “Density”:
Fact or idea I Read
Question I have about the Fact or
Idea
Process and Procedures pg. 76-78; 1a-5
 Answer The questions in your notebook
 Time Travel: Read the Interview with Democritus pg
76-78. Take notes and answer
 Answer number 5 in your notebook
Reflect and Connect Pg 79; 1-4
 Questions and Answers in complete sentences!!!!