Then we tied some string in the middle of the inner circle .
We cut the string so that it was hanging only to the center of the circle.
We found some red, yellow and green air dry clay and made 10 little balls about the size
of a small grape.
The outer electron shell has one electron and the inner shell has 2.
We clumped them all together around the end of the string.
We looked at the periodic table and noticed how all the elements are arranged by their atomic number, how many protons are in the atom.
We looked at my camera's lithium battery.
Did you know lithium is the lightest metal on the periodic table?
We plan on making several more molecule models just to compare with each other.
We had fun with this project.
It's fast and easy!