Contributed by Ea Nasir
Clear Oxygen gas in an ampoule, in a bottle
Contributed by collector no. 4
Oxygen in an ampoule. Normally an invisible gas, Oxygen glows a faint white-blue when put under high voltage.
The Chalcogen group: Oxygen , Sulfur , Selenium , and Tellurium
Contributed by collector no. 3
The Chalcogen group: Oxygen , Sulfur , Selenium , Tellurium
Contributed by collector no. 2
Ampoule of Oxygen next to a plasma globe, glowing a dim lilac color
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