* Intensive Properties: These properties are independent of the amount of substance present. For example, density, temperature, and boiling point are intensive properties.
* Extensive Properties: These properties depend on the amount of substance present. For example, mass, volume, and length are extensive properties.
Ductility describes a material's ability to deform under tensile stress without fracturing. It is directly related to the amount of material present. A larger amount of material will be able to deform further before breaking compared to a smaller amount.
Example:
* A thin wire of a ductile material like copper can be stretched to a considerable length before it breaks.
* A thick copper rod will be able to stretch even further before breaking.
Therefore, ductility is an extensive property because it changes with the amount of material present.