We Can Figure This Out.org
Virtual Lab: Pithball Ping Pong
 University of Virginia
             
 
© 2003-Present, John C. Bean
 
The rod is made of atoms that have a precise balance of positive protons (in the nuclei) and surrounding electrons.

At room temperature, some of the atoms may release electrons to become positive ions.

In this view, red spheres represent positive ions, and blue spheres represent electrons.

 
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