Ctrl as primary modifier. The Google Slides shortcut set on ChromeOS uses Ctrl throughout, matching Windows. If you've used Slides on Windows, every shortcut transfers directly.
The Search/Launcher key. As with other Chromebook applications, the Search key (in the Caps Lock position) is used in ChromeOS system shortcuts but rarely appears in Google Slides-specific shortcuts. Knowing it exists avoids confusion when Slides shortcuts reference Ctrl or Alt.
Chromebook keyboard and the top row. Chromebook keyboards don't have a standard F-key row, the top row includes screen brightness, volume, fullscreen, and other function keys. Google Slides shortcuts that use Ctrl combinations are not affected by this, but F-key-dependent shortcuts from other platforms don't apply here.
Built-in shortcut list. Ctrl+/ opens the Google Slides shortcut panel within the application, identical to Windows. Particularly useful on Chromebook where other shortcut lookup options may be limited.
Presentation delivery. Starting a presentation, advancing slides, using the black screen, and jumping to a specific slide all work on ChromeOS. The Ctrl-based shortcut for starting a presentation is covered in the table above. Once a presentation is running, delivery controls (black screen, slide navigation, ending the show) work as on Windows.