Caesium reacting with water, high-speed

Videonummer 11937698
High-speed footage of caesium reacting explosively as it falls into cold water. Caesium (Cs) is an highly-reactive alkali metal element that reacts with water to produce the strong base caesium hydroxide, also releasing hydrogen gas. The caesium sinks and generates hydrogen gas so rapidly that shock waves form in the water, and the heat of the reaction boils some of the water into steam. Multiple explosions and shocks are seen at this speed. The indicator phenolphthalein was added to the water to highlight the reaction, as it turns from colourless to pink in the presence of the alkaline caesium hydroxide. Filmed at 2000 frames per second (slowed down 80 times). This clip features the chemical equation. For a version without this text, see clip K003 9275.
Lizenzart: Lizenzpflichtig
Credit: Science Photo Library
Modell-Rechte: nicht erforderlich
Länge: 01:15 Minuten
Seitenverhältnis: 16:9
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