Catalysis of the decomposition of hydrogen peroxide is demonstrated in a foil-covered florence flask or fancy bottle. A packet of manganese dioxide catalyst is suspended by a thread inside the neck of ...

The common experiment for classes with the air-pump shows this. Again: Take a Florence flask, fill it two-thirds with water at 200°; pour cold water over it; and it bursts into ebullition ...

The aldehydes in reducing sugars will reduce silver ion from Tollen's reagent to metallic silver, leaving a reflective mirror on the inside of a flask. To conduct demonstration: 1. Add 5mL 10% AgNO3 ...

The wax is still in the bottle. So if the bees were all locked in their cities like ships in a florence flask, think of all those bees in a jersey, what a tribulation that might be. They are ...