Dates

- 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

Notes

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

Homework

- Finish lab – submit to Dropbox

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