Kinda the wrong section for this....
But, Chrome is a browser, similar to internet explorer which you are probably using now, google is a web site (as is this site) you can open any website with any browser you want (so you can visit the google website with either chrome or internet explorer.)
Most people will say that chrome is a better browser than internet explorer (including me) but in my opinion the difference is not as great with the more recent versions of IE than it once was so as long as you are using the latest version of IE there's not a huge reason to change if your happy with IE.
That said, there's not reason why you can't try it out and see what you think, if you don't like it simply uninstall it and go back to using IE.