Density Report

Essay by PaperNerd ContributorCollege, Undergraduate October 2001

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The purpose of the lab has 2 principles; they are the following: Part A: To confirm the identity of 3 regular solids based on their densities.

Part B: To confirm that density is an intensive property.

Part A: In order to verify the densities of the three solids, which were the subjects of our experiments, you need to find the mass and the volume of the solids then divide mass by volume (m/v.) After doing so you will get the density of a single solid. After accomplishing this you must proceed by finding your percentage error. The actual density of Aluminum (Al) is 2.70g/cm the result I got for density was 2.91 which is within the 10% acceptable range therefore, verifying that my solid was aluminum. I used this procedure on Brass and Iron (Fe) as well. For Brass the actual density was 8.7 g/cm . My result was 9.09,

still within the 10% acceptance range. Lastly, the actual density of iron is 7.87 g/ cm my calculated density was 8.41 g/cm . Which is also within the 10% range. This is the technique used to identity 3 regular solids based on their densities.

Part B: Density is an intensive property because it doesn't matter on the size of the sample it depends on what the sample is made up of. For example weight wouldn't be an intensive property, but rather an extensive one, because it depends on the quantity of the substance on hand. Density is rather the opposite. Depending on what the substance is made up of (m/v) the density differs. Based on my graph (mass vs. volume), a straight line is formed, proves that density remains constant despite variations in volume.

Density is the amount of stuff per unit of volume, (m/v). The measurement of...



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