Even after closing Google Chrome, there are many background processes running and consuming lot of memory. How do I end all the processes when I close Chrome? Following is a picture of processes after closing Chrome browser.

Even after closing Google Chrome, there are many background processes running and consuming lot of memory. How do I end all the processes when I close Chrome? Following is a picture of processes after closing Chrome browser.

I had the same problem plus chrome was putting an Icon on the menu bar.
Come to find out their is a setting in Chrome that appears to keep chrome in memory all the time.
Make chrome completely shut down.
Within chrome:
Settings:
Show advanced settings...
Unchecked "Continue running background apps when Google Chrome is closed"
I noticed the icon in the menu bar a couple of days ago must have happen during an update.
Mark
killall chrome will do the needful.
That setting under Chrome config doesn't close the proccesses after closing Chrome. In fact that changed nothing.
I have the same problem here and I don't want to open a terminal window and running a line of code every time I close Chrome.
This is, in my opinion, a flaw of development.
There is another topic with the same discussion: How can I stop accumulated Google Chrome background processes?
Have you tried this?
pkill chrome
Or maybe this?
while pgrep chrome ; do pkill chrome ; done
On my Ubuntu 14.10 box, I found out that the last remaining process was chromium-browser --pinch-zoom enabled. After disabling this, the problem stopped for me. I had enabled this in regular Chrome for the touch screen support and I think it synced it somehow. Anyway, try that. I imagine this will work for regular Chrome as well.
Good luck!