The change of identity is neither a physical nor a chemical property. It's a concept that describes a change in the nature or essence of something, often referring to a person's identity.

Here's why:

* Physical properties are characteristics of a substance that can be observed or measured without changing the substance's chemical composition. Examples include color, density, melting point, boiling point, etc.

* Chemical properties describe how a substance reacts with other substances, or its ability to undergo chemical change. Examples include flammability, reactivity with acids, etc.

Change of identity doesn't fall under either category because it's not a property of a substance but a change in its fundamental nature, often related to personal identity, social roles, or even philosophical concepts.

Let me know if you'd like to explore specific examples of change of identity in different contexts!