The first stoichiometry problems chemistry students do are mass to moles to atoms calculations for monatomic elements. This activity has students make those calculations for four easily obtainable metals: aluminum, copper, iron, and zinc. You will need aluminum and copper shot, iron filings and mossy zinc - about 60 g of each. Each student gets a different calculation, but the key makes grading the activity a breeze.
Keywords: metals, transition, chemistry, experiment, activity, sorting, periodic table, mass, moles, stoichiometry, Avogadro.