Sulfur itself is a chemical element. However, the properties of sulfur can be either physical or chemical.

Here's the breakdown:

* Chemical properties describe how a substance reacts with other substances. Examples of sulfur's chemical properties include:

* Reacts with oxygen to form sulfur dioxide (SO2)

* Reacts with metals to form sulfides

* Burns with a blue flame

* Physical properties describe the characteristics of a substance that can be observed without changing its chemical composition. Examples of sulfur's physical properties include:

* Yellow color

* Brittle solid

* Insoluble in water

* Melting point of 115.21 °C

So, while sulfur is a chemical element, its properties can be classified as either physical or chemical depending on what aspect of sulfur is being described.