Bakelite is classified as a thermosetting plastic because it:
Cannot be remoulded once hardened
Thermosetting plastics undergo a permanent chemical change on heating, forming extensive cross-links between polymer chains during moulding.
Bakelite is a poor conductor of electricity and does not dissolve in water, so these properties do not explain its classification.
Once Bakelite is moulded and set through this cross-linking reaction, it becomes rigid and infusible, meaning it cannot be melted or reshaped again, unlike thermoplastics which soften and can be remoulded on heating.
Hence, the correct answer is that Bakelite cannot be remoulded once hardened.
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