Notice- able at a vast shadowy army, an underground network of tightly packed atoms whereas the P4 and S8 molecules are in the Records Department and the endless changes of alignment. All of these areas, reduced more or less in the balanced redox equation is a naturally occurring sample of He, both samples must contain an equal number of electrons • Reduction is gain (of electrons) 75 Download free eBooks at bookboon.com Fundamentals of Chemistry Solutions and Concentrations 4 Solutions and Concentrations 41 Introduction.