...,
Su09 More about melting and solidification of sulfur:
Continued heating, strong heating, pouring into cold water


 * Left: Go on heating the yellow liquid sulfur of the previous experiment.
Observation:   With continued heating the relatively nonviscous liquid changes to the colour and the high viscousity of honey.
* Photo 2: Heat more until the liquid starts boiling.
Observation:   Further heating lowers the viscousity of the brown liquid again.
* Photos 3 and right: Pour this liquid into cold water.
Observation: By suddenly cooling a substance called plastic sulfur which has rubberlike qualities, is formed

Erklärung: The molecules of sulfur change above the melting point and below the boiling point.                      More explanations by models.
go back................go on.........,,.............................,,,,,,,,,................. .....................last modification: 10.07.2001