Here is a list of accelerators and how-to related to Chrome OS. It will be maintained and updated regularly.
|Whole Screen||[Ctrl] + [F5]|
|Select Window to File||[Ctrl] + [Shift] + [F5]
|Lock Screen||[Windows Search] + [L]
There is no way to suspend. Just lock the screen and it would suspend later.
|Show All Accelerators||[Ctrl] + [Alt] + [/]|
|Open Closed a tab or tabs in the same window||[Ctrl] + [Alt] + [T]|