Science Lab

Purpose To celebrate out the densities and to find out the name of the unknown metals. (Based on the extensive and intensive properties) check off up the words mass, hoi polloi, assiduousness, extensive properties, and intensive properties. Where do the units for mass and volume) put in from and what do they mean? What is the density of distilled water? What is Archimedes principle? Does temperature affect the density of a solid? Liquid? Gas? Materials Safety glasses, 10, 25 or 50 mL graduated piston chambersDistilled water coat Samples W, X,Y & Z Procedure 1. Class split into 5 groups. Every group leave get data for four metals and tell it to the twelvemonth 2. Choose a metal ensample for every group then pass it nigh between groups. 3. Set a number of your metal sample and say the mass in the table. 4. Get a gradated cylinder with distilled water, but non to much to make it over flow when sample is put in. designate the amount of water in the cylinder accurately 5. Then tip the cylinder to about 45 degrees then put sample into it slowly, DONT decline any water or have to restart. Make certainly no air bubbles are clinging. Then take down net volume of water cylinder. 6. Dump the water out, then dry sample off. 7. Repeat this over with the other metal samples. * Hypothesis * My hypothesis is that rase though I will find the densities and name calling of the unknown metals its non going to be accurate because some water will spill out.Many people are going to come up with the different names because they arent care full enough. Mass of metal Initial volume of water Final volume Volume of metal ExperimentalDensity of metal convocation Data Metal W Metal X Metal Y Metal Z Class Data Mass and Volumes of each groups metal samples Lab Group Metal W Metal X Metal Y Metal Z 1 2 3 4 5 Total * Class Exp.Density * * 1. Show an example of how your group compute the data-based densities of your group samples and the class samples. 1. Graph the class data exploitation mass as the x axis and volume as the y axis, (title the graph and make a legend or key for the unhomogeneous metal samples). 1. Compare your groups experimental density to that of the classs experimental density from the graph and make comment as to their relative accuracies. 1.Research the possible identities of the metals based on their extensive properties (density, radioactivity, heat capacity, conductivity, deadly exposure/dosage, etc. ) and intensive properties (color, texture, luster, magnetism, reactivity, etc. ). 1. Make a assert as to the identity of the various metals based on their extensive and intensive properties. Calculate the % error for each of your claims for both your groups experimental values and the classs. Show an example of each type of deliberateness and make a table representing the organized results. *