Question

Define sublimation. How is the sublimation of camphora physical change

Answer 1

The process of change of state of matter from solid to gas or gas to solid,due to Gaining or losing of Kinetic Energy is called Sublimation.

Sublimation of Camphor is a physical change because only it's state is changed from Solid to Gas.

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Answer 2

the process in which the state has been changed directly from solid to gas or (vice versa) without changing into liquid is known as sublimation
camphor is a solid when we heat it.it will start sublimating.