Boiling of an egg is a chemical change
Reasons for boiling of egg being a chemical change are as follows:

Chemical Change:
- When an egg is boiled, the heat causes the proteins in the egg white and yolk to denature, which means their structure changes permanently.
- Denaturation of proteins is a chemical change because the bonds holding the protein molecules together are broken and rearranged in a new way.
- The change in the structure of the proteins leads to a change in the texture and color of the egg, indicating a chemical change has occurred.
- Additionally, during boiling, the water in the egg evaporates, and new compounds are formed due to the heat, further supporting the idea that a chemical change is taking place.
- Once an egg is boiled, it cannot return to its original raw state, further confirming that a chemical change has occurred.
In conclusion, the boiling of an egg is considered a chemical change because it involves the denaturation of proteins in the egg, leading to a permanent change in its structure and properties.