The behavior of sulphur while reacting with water and alkali is similar to that of

Sulphides can be formed by the direct reaction of the alkali metals with elemental sulphur.Sulphur does not react with water. If you put the two together, the sulphur will float on the surface of the water or at best, the sulphur  will get wet.This behavior of Sulphur resembles with the CO2.