<p>Is this necessary to know?</p>
<p>IDK what activity series are and I’m getting 740-770 on practice tests.</p>
<p>^Activity Series is essentially the list of the most reactive metals down to the least reactive. It’s used to determine whether single-replacement reactions (for example, Zn+LiOH) would occur or not.</p>
<p>Oh, would that be useful?</p>