This is a multiple concepts lab that has a lot of 'wow' factor for students as metals disappear and new ones appear. It is in miniscale so you that don't use that much of your chemicals. For 250 students, I generally use up: 20 g Fe, three 12"x12" sheets of Al foil, 12" of Mg ribbon, 20g Zn powder, and 200 ml of 1M CuSO4 solution. Equipment: large test tubes, 0.001 accuracy balance, long glass thermometer, small beaker, graduated cylinder, timer (or let them use cell phones)
Concepts covered: