There are two kinds of people in this world: impossibly organised saints... and all the rest of us, with our 27 tabs open in Chrome at any given time. Sure, keeping all those tabs open is its own kind of organisation -- I'm saving this to read later, I need that open for reference -- but when one of those pages becomes unresponsive and we need to force-quit Chrome, the whole house of cards comes crashing down.
It's important to know how to force-quit a frozen program, but even better, when it comes to Chrome, is to quit just the single unresponsive page and Make Use Of has the trick: Figure out which tab is frozen (and make sure it's not just loading very slowly).
Then open Chrome's Task Manager (from the Window menu up top) to see all of the processes -- tabs and extensions -- that Chrome is running. Click on the tab you want to kill, and then click End Process.