Ease of corrosion is not a change in the traditional sense of physical or chemical change. It's a property, not a process.

Here's why:

* Physical Change: A change in the form or appearance of a substance, but not its chemical composition (e.g., melting ice).

* Chemical Change: A change where a new substance is formed with different chemical properties (e.g., burning wood).

Ease of corrosion describes how susceptible a material is to corroding (a chemical process). It's a measure of its resistance to chemical breakdown.

Let's break it down further:

* Corrosion itself is a chemical change. It involves a chemical reaction between a material and its environment, usually involving oxidation.

* Ease of corrosion is a property that indicates how readily this chemical change will occur. It's determined by factors like the material's composition, surface finish, and the environment it's exposed to.

In summary:

* Ease of corrosion is a property, not a change.

* Corrosion is a chemical change.

* Ease of corrosion describes how easily a material will undergo corrosion (a chemical change).