Chemistry
in Everyday Life
Laboratory:
Isotopes of Pennium
Sampling:
Take a handful (12 - 15) pennies. Make sure you have a wide range
of years and condition (some old and tarnished, some new and
shiny). Weigh each penny separated and record the weight.
Are any pennies significantly different than others. What do the
lighter pennies have in common? Why are these pennies
lighter? How many pennies are in each group?
Testing: Weigh the empty film canister. Bring it to
me and I will fill it with pennies. Your job is to figure
out how many pennies are in the canister without opening it. Open
the canister and see if you are correct.