How can you predict if one metal will replace another metal in a single replacement reaction?
The activity (or reactivity) series determines whether or not a metal will replace another one in a replacement reaction.
How can a table listing of metals in an activity series be useful for prending whether a chemical reaction will occur?
An activity series of metals can predict whether a replacement (displacement) reaction will occur. You use the activity series to compare the reactivity of different metals in order to predict whether a replacement reaction will occur. A metal that is above another metal in the series will replace that metal in a compound.