Penny Isotope Lab - Activity 1.1 Penny Isotopes Conducted...

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Activity 1.1: Penny Isotopes Conducted February 19, 2015 to February 26, 2015 By Aliyah J. and Lydia M. Introduction Pennies are made up of a combination of both zinc and copper. Not all pennies are similar. Each penny has a different mass because they are made up of different isotopes of those elements. Also, each year the masses of the pennies changes because they can’t look and identify every atom of zinc and copper to know their atomic mass, so they use any isotope they could get their hands of the elements to make the penny. The purpose of this activity is to determine the isotopic abundance of the pennies in the four groups and determine the average mass of one penny. Question How does the isotopic abundance of each group affects each groups masses and the average mass of one penny? Materials 50 pennies One small paper cup Balance acquire Calculator Procedure 1) I sorted the 50 pennies in 4 groups Group 1: 2000 to the present Group 2: 1997 to 1999 Group 3: 1980 to 1996
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