No matter what size a sample is, if is hard, it will still be just as hard. This means that hardness is an intensive properties. Intensive properties do not matter what size of sample is being used. Extensive properties will change if sample size is changed.
Molarity is an intensive property.
Length is an extensive property.[ An extensive property of a system is directly proportional to the system size or the amount of material in the system, like mass and volume, but not: density or viscosity]
Height is an intensive property because it does not depend on the amount of the substance present. It remains the same regardless of the quantity.
Texture is an intensive property, because the texture of a material does not change dependent on the amount of the material that is measured.
Extensive
Hardness, young pupil is an extensive property, because it pertains to more physical properties. Intensive properties are usually associated with the chemical structure of the element. XDDXDXDXDXD
is radioactivity extensive or intensive or chemical property
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Intensive/extensive are not adequate terms for the age.