You are an electrochemist working in an analytical lab that recycles old batteries. You need to identify unknown metal samples so that they can be safely processed and recycled.
![A pile of used batteries. Image from Pixabay.](/pbl/sites/files/pbl/styles/full_width_m/public/shared/Used_batteries.jpg.webp?itok=9WWSK6Zf)
Problem written by: Jeremy Pimentel
Curriculum items covered: Oxidation and reduction, electrochemical cells, reduction potentials.