Why was there a green residue on the wire in my ionic compund experiment?

Subject: Why was there a green residue on the wire in my ionic compund experiment?

Date: Mon Sep 29 17:16:45 2003
Posted by Dani
Grade level: 10-12 School: Homeschool
City: Canon City State/Province: Colorado Country: USA
Area of science: Chemistry
ID: 1064873805.Ch

Message:


I did an experiment testing whether baking soda was an ionic compound. (It 
was.) I attatched a wire I believe to be copper to the two posts on a 9 volt 
battery. I put the wires in the baking soda/water solute and it bubbled. When I 
extracted the wires, I saw a green residue on the wire, attatched to the 
positive post. What is that and why is it there?

Re: Why was there a green residue on the wire in my ionic compund experiment?

Current Queue | Current Queue for Chemistry | Chemistry archives

Try the links in the MadSci Library for more information on Chemistry.