I just noticed today that there's a keyboard shortcut behaviour setting in ChromeOS terminal.

ChromeOS terminal keyboard shortcuts.

1. Open Terminal.

2. Open Terminal Settings.

3. Finally, open Profile (default) > Keyboard and mouse.

Aside from what's listed there, here's the default keyboard shortcuts that I know:

• Three-finger swipe: change active tabs.

• Ctrl+Shift+T: new tab to the right.

• Ctrl+C: terminate a running process or command.