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http://d24w6bsrhbeh9d.cloudfront.net/photo/5231325_700b.jpg 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!!!!