Google Chrome runs many background processes even after you've shutdown the app.

To configure Chrome to shut everything sown when you close the app, perform the following steps:

1. Press the Settings icon in the upper righ corner (Looks like three dots stacked)
2. Select Settings (a new taab will open)
3. Scroll down and press Advanced
4. Scoll down to the System section
5. Disable the Continue running background apps when Google Chrome is closed

Chrome will no longer run most of the processes it keeps running when shutdown.

To re-enable the feature, just re-enable the slider.