Burning Sulfur

Sulfur is a non-metal chemical element which is a solid at room temperature. It has a melting point of 115.21 degrees Celsius (239.38 °F / 388.36 K).

Sulfur is pretty dynamic in the way it looks so different going from one chemical state to another. As a solid, pure sulfur has a bright yellow colour, then when you melt it turns into a blood red colour, but when you burn sulfur, it has an amazing ultra violet flame.

Solid crystalline and powdered sulfur:

Liquid sulfur:

(Image Credit: Olivier Grunewald)

Burning sulfur:

(Image credit: Johannes 'volty' Hemmerlein)

Burning sulfur at the Kawah Ijen volcano in Indonesia:

(Image Credit: Olivier Grunewald)