Most of the keys on your Chromebook work the same as any other keyboard, but Chromebooks also have a few unique keys. To find out more about them, read below.
Note: If you're using a Windows keyboard with your Chromebook:
Search your apps and the web
To turn Caps Lock on or off, press Alt + Search.
Go to the previous page in your browser history (F1)
Go to the next page in your browser history (F2)
Reload your current page (F3)
Hide the tabs and launcher in full-screen Immersive mode (F4)
Show all windows in Overview mode (F5)
Dim the screen (F6)
Make the screen brighter (F7)
Mute (F8)
Lower the volume (F9)
Raise the volume (F10)https://support.google.com/chromebook/answer/1047364?hl=en-GB