Sunday, March 23, 2014

The density of 1 kilogram of iron is less than the density of 1 gram of iron. True or false?

There are two types of physical properties of matter:



  • Intensive Properties: Properties that don't change when the amount of the substance changes. For example, the color of one gram of iron is the same as the color of ten grams of iron. The color of iron is an intensive property because it is the same regardless of how much iron is present.


  • Extensive Properties: Properties that do change when the amount of the substance changes. For example, the volume of one gram of iron is different than the volume of ten grams of iron.

Density is the amount of mass in a particular volume of a substance. It is calculated using the ratio of the substance's mass to its volume.


   Density = mass/volume


The mass/volume ratio of a substance is always the same regardless of how much substance is present. Therefore, density is an intensive property. The density of iron is always the same, although it CAN be expressed differently by using different units. The answer is false.

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