Translations:Benutzer:Arian/Klett-Mini-Test/1595/en

not elementally. The representation as elemental phosphorus shows the astonishing phenomenon that, depending on temperature, it has five modifications of its mode of appearance. The first modification to arise is white phosphorus; it is poisonous, luminous in the dark, and stable only under water. On contact with air it ignites spontaneously at 44°C and burns with a brightly glowing, hot flame to phosphorus pentoxide (P₂O₅). Under exclusion of air and at elevated temperature, or under exposure to light, a second modification arises, red phosphorus; it is stable, does not glow, and is non-toxic. Three further modifications follow with substantially different properties: a light-red, a black, and a black amorphous phosphorus.