Density Lab Report Essay - Part 3

Lab Report Density Name: Period: Problem How do you calculate Density? - Density Lab Report Essay introduction?? What units did you use for volume, mass, and density? When the cubes are placed in water which one will sink 1st? What is the ranking of the cubes lightest (1) to heaviest (10)? Is it true that the cube with the most mass will have the most density? Hypothesis I think the 1st cube was aluminum I think the 2nd cube was steel I think the 3rd cube was brass I think the 4th cube was copper I think the 5th cube was acrylic I think the 6th cube was oak I think the 7th cube was pvc

I think the 8th cube was pine I think the 9th cube was poplar I think the 10th cube was nylon Materials Aluminum Steel Brass Copper Acrylic Oak Pvc Pine Poplar Nylon Ruler Triple beam balance Calculator Writing Utensil Method 1) Thought of my hypothesis when Mrs. K was showing us the cubes. 2)I used a ruler to calculate the volume of the cubes in cm3 3)I used a Triple beam balance to calculate the mass in g 4)I divided the mass by the volume to get the density in g/cm3 5)I ranked the cubes from lightest (1) to heaviest (10) )I repeated these steps for each cube. Observations Data/Calculations Color/Descriptionvolume (cm3)Mass (g)Density (g/cm3)Rank 1-10 White plastic15. 6cm6. 5g0. 412 Wood (medium)15. 6cm7. 4g0. 474 Clear Block15. 6cm9. 2g0. 595 Wood (light)15. 6cm7. 1g0. 453 Wood (dark)15. 6cm1. 5g0. 091 Gray Plastic15. 6cm16. 5g1. 056 Black Cube15. 6cm170g10. 8910 Shiny solid Gray15. 6cm43. 4g2. 87 Dull Penny15. 6cm143. 5g9. 199 Gold color15. 6cm134. 6g8. 68 Results I thought the 1st block was aluminum, I was right. I thought the 2nd block was steel, I was right.

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I thought the 3rd cube was brass, I was right. I thought the 4th cube was copper, I was right. I thought the 5th cube was acrylic, I was wrong, it really was nylon. I thought the 6th cube was pine, I was wrong, it was really oak. I thought the 7th cube was pvc, I was right. I thought the 8th cube was oak, I was wrong, it was really pine. I thought the 9th cube was poplar I was right. I thought the 10th cube was nylon, I was wrong, it was acrylic. Conclusion To calculate density you divide the objects mass by its volume.

The units I used for volume were cm, for mass g, for density g/cm3. When the cubes are placed in water the one that will sink first is the black cube because it has the most mass and is the most dense. The ranking in cubes from lightest to heaviest is; dark wood, white plastic, light wood, medium wood, clear block, gray plastic, shiny solid gray, gold colored cube, dull penny, and the black. No, it is not necessarily true that the object with the most mass has the most density, because the volume could vary.

But, in this situation the object with the most mass is the most dense because all of the volume’s are the same. Discussion During my density lab I made a make a big mistake. This mistake was calculating the density wrong, because my volume measurement was incorrect my density measurement was also incorrect. The reason that my volume was wrong was because my partners and I used the wrong side of the ruler and just estimated the value in centimeters. But, at the end of my project when i figured out my volume was wrong I rewrote my graph using the correct volume. My project is now fixed!

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