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Lab Report Essay

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The purpose of this lab is to test various element for their conductivity, solubility, and physical characteristics. We will see if the object is a metal, nonmetal or a metalloids (semimetals). Metals are commonly known as to be ductile (can be used in wiring), malleable (can’t be break down when pressed down hard), have a metallic luster, and are conductors of heat and electricity. Non-metals are more likely to be non lustrous, brittle and poor conductors of heat and electricity. Where as metalloids has the same characteristics of both metals and nonmetals. To be able to test this element, we have to test the physical properties first. To do this, we observed the sample and record its physical characteristics. We also recorded its physical properties, as in focusing the texture …show more content…

Second, we’ll need to test the conductivity. By this, we connected the sample to the wires that were attached to the lightbulb and a battery. If the light bulb light up when connected to the sample, then that proves that the sample is conductive. If the light bulb doesn't light up, then the sample is not conductive. Third, we needed to figure out if the sample is soluble or not. To test this, add a small amount of broken down pieces of the sample into a beaker filled with 100ml of water. Stir the sample with a stir rod for 10-15 seconds to see if it dissolved completely, if yes, then the sample is soluble, if not then the sample is not soluble. Repeat all these steps for the other samples and the unknown sample. The samples that used is Copper (Cu), Lead (Pb), MAgnesium (Mg), Sulfur (S), Carbon (C), and two unknown samples which were later identified as Tin (Sn) and Iodine (I). Before we started the lab, my hypothesis was that Lead (Pb) will have a higher conductivity than Sulfur (S) because Sulfur falls in the semi-metal category whereas Lead is in the metal

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