There are many ways to check the Model of your Chromebook. We'll start with the most straightforward.
See also: How to lock screen on Chromebook.
What Chromebook Do I have: How to Find Its Model?
1. Checking the Back of the Chromebook
The first path to take when checking on the Model of your Chromebook is to look at the laptop itself or its original packaging.
Most, if not all Chromebooks have a label at the bottom once you turn them over. On it, you will see the model number and serial number as well as the laptop's manufacturer. Be sure not to get the two numbers mixed up.