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! Includes Teacher Demonstration Notes and reproducible student worksheets.Enough materials are included to perform the demonstration seven times.
Concepts: Electrolysis, oxidation-reduction, anode, cathode.
Time Required: 15 minutes
Materials Provided: Tin(II) chloride solution, 9-V battery, battery cap with alligator clip leads, Petri dish.