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Chemistry Honors – Class 12

Pennies from Heaven


  • Periods A, C – Wednesday, September 18th
  • Period D, Thursday, Septmebr 19th

Activity – Isotopes

  • Determine the number of “old” and “new” pennies in your sample without counting the pennies in the provided sample
  • The pre-1982 and post-1982 pennies have different masses
  • Each sample of “coinium” has 27 pennies
  • Determine the number (percentage) of each type of penny in your sample
  • write a procedure, collect data, get answer


  • not allowed to open container
  • allowed to measure known pennies from each type
  • allowed to measure empty container
  • there is a “right” answer


  • Finish lab – submit to Dropbox


This entry was posted on September 18, 2013 by in Agenda, SHP-CH and tagged , , .


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