Explanation

 Bakelite is a thermosetting polymer. 

Thermosetting polymers are plastics that undergo a permanent chemical change when heated,

Forming cross-links that make them rigid and unable to be reshaped or melted after curing.

Bakelite is a classic example of a thermosetting polymer,

Formed through the condensation reaction of phenol and formaldehyde.

It is often used in applications like electrical insulation and handles.