Chromebooks are usually quite resilient when it comes to heat, however, leaving one exposed to scorching temperatures for extended periods of time can certainly begin to cause damage. While the device may not appear to be functioning differently, internal components such as RAM, processor and storage can all suffer if they are heated up beyond their tolerances. Whenever possible you should keep your Chromebook in a cool and dry environment as long exposure to extreme heat can lead to instability, performance issues or even total failure. If you think your Chromebook has been exposed to high temperatures make sure you let it cool gradually before attempting to use it again.