The Reversible Tin Man Oxidation–Reduction Chemical Demonstration Kit focuses on oxidation–reduction and shows students the components of an electrolytic cell. Students watch tin crystals grow across a Petri dish and then quickly “reverse.”
Grow a beautiful “tin-man” crystal tree using this electrifying demonstration! This quick and simple demonstration will teach oxidation–reduction principles and show students the components of a simple electrolytic cell. Students will enjoy watching tin crystals grow before their very eyes across a Petri dish and then quickly “reverse” as the cathode and anode are switched. A true crowd-pleaser! Teacher Demonstration Notes and reproducible student worksheets are included.
Concepts: Electrolysis, oxidation–reduction, anode, cathode. Time Required: 15 minutes Materials Provided: Tin(II) chloride solution, 9V battery, battery cap with alligator clip leads, Petri dish.