* Solid Sulfur: At room temperature, sulfur exists as a brittle, yellow solid with a rhombic crystal structure.
* Melting: When heated to around 115.21 °C (239.38 °F), sulfur melts and becomes a mobile, straw-colored liquid.
* Further Heating: As the temperature increases, the liquid sulfur becomes more viscous (thicker). This is due to the formation of long chains of sulfur atoms, which can eventually lead to a rubbery, dark brown state.
Important Note: Sulfur exhibits different forms (allotropes) with varying melting points. The most common form, rhombic sulfur, melts at 115.21 °C. Other forms, like monoclinic sulfur, have slightly different melting points.
