Extensive properties include the quantity of three-dimensional space enclosed by some closed boundary as well as mass.
A property of matter that alters as the amount of the substance changes is called an extensive property. An extensive property, like other physical qualities, can be seen and measured without any chemical change (reaction) taking place.
Unlike extensive characteristics, intensive properties are independent of the volume of the sample. No matter how much material you are looking at—large or small—they are all the same. Electrical conductivity is one such intense feature. A wire's composition, not its length, determines how electrically conductive it is. Two other illustrations of intense attributes are density and solubility.
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