This site contains documentation for multiple different ways to hang or crash chrome.
This is perhaps the most, fun way to crash. Visiting the page leads you to a page that is designed to open up more pages of itself. Those pages open up more pages, and so on. It's not very good at crashing, but it will give you a good scare.
This is the only method that is not only designed to crash chrome but will crash your entire OS. It has an almost 100% success rate and will result in the loss of all your work. It involves mass reloading the page 1000 times every frame, and for good measure prevents you from closing the tab!
This method involves performing tons of useless calculations eventually hanging the tab. It will display an Aw Snap message. This one isn't really good for crashing, but is really great if you infect a bookmark with it since it works silently! Unforntunately, bookmarks have been blocked as of recently.