In this lab students compare the two isotopes of Pennium, and find the percent abundance of each isotope in a sealed container. Pennies before 1982 differ in mass from pennies after 1982 because their composition changed, so their difference in mass serves to provide a model for isotopes. This is a great lab to focus on significant figures and computational thinking as well as isotopes.

Items included in this lab are listed below.

Opaque Baggies.