What is extensive physical, and intensive chemical? What's the difference between them?

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Extensive physical properties and intensive chemical properties are two different types of properties that can be used to describe matter.

Extensive physical properties are dependent on the amount or size of the matter being observed. Examples of extensive physical properties include mass, volume, and length. These properties change with the amount or size of the substance. For example, if you have two identical blocks of wood, one that is twice as long as the other will have twice the length and volume.

On the other hand, intensive chemical properties are independent of the amount or size of the matter being observed. These properties depend on the substance itself and not on the quantity. Examples of intensive chemical properties include boiling point, melting point, and density. For example, the boiling point of water is 100 degrees Celsius, regardless of whether you heat a small cup of water or a large pot of water.

The key difference between these two types of properties is that extensive physical properties change with the amount or size of the substance, while intensive chemical properties remain constant regardless of the quantity.