Intensive property

A property of a physical system is said to be intensive if it is not dependent on the amount of "stuff" present in the system¹. "Stuff" can be any quantity of interest, like number of atoms, mass, electric charge, etc. For instance, mass or charge density are intensive because they do not depend on how many atoms there are in an object, only how spatially frequent they are.

The opposite of an intensive property is an extensive property.

These properties can be seen as being attached to a specific material or state of matter, like a specific chemical element, alloy or material.