Introduction by anonymous students

Introduction by anonymous students - were all of either a...

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Introduction by anonymous student #1: The purpose of this lab was to identify the material composition of ten unknown samples using qualitative analysis, density calculations and magnetic response. Each of these qualities is specific to a material, and thus does not change based on geometrical differences. Dimensional analysis and Archimedes principle, which states that the buoyant force of a submerged object is equal to the weight of fluid displaced by the object, were used in the determination of the densities. The magnetic response of the material was based on its ability to exert attractive or repulsive forces when induced to a magnetic field. Finally, the physical appearance (color and texture) of the materials was used to further clarify uncertainty in the identification. Introduction by anonymous student #2: A bag, labeled "Bag #2", containing ten unknown samples was obtained. The samples
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Unformatted text preview: were all of either a metallic or ceramic nature and had geometries close to ideal geometries. The goal was to determine the identities of the unknown samples from a list of possible materials using both qualitative and quantitative characteristics. The identities of these samples were to be determined using densities calculated from measured masses and volumes, along with magnetic and visual characteristics. Standard deviations were to be calculated for the measurements and an uncertainty analysis was to be conducted for each density calculation. The results could then be used to determine the precision of the measurements and calculations. A comparison between the calculated densities and the published and theoretical densities could then be used to reveal the accuracy of the measurements and calculations....
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