Credit: SCIENCE PHOTO LIBRARY MOTION

Caption: Potassium and water. Water being dropped onto metallic potassium. These react to form potassium hydroxide and hydrogen gas. The reaction is exothermic, enough heat is generated to instantly melt the potassium and ignite the hydrogen. The flame shows the typical purple colour of potassium ions. This reaction is characteristic of the Group I elements of the periodic table.

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Keywords: 1, alkali, burn, burning, chemical, chemistry, combustion, drop, droplet, droplets, dropping, drops, element, energetic, energy, exothermic, exploding, explosion, flame, flaming, formation, group i, hydrogen, hydroxide, ion, k, laboratory, metal, metallic, one, periodic table, pipette, potassium, purple, reaction, smoke, sparking, sparkle, spitting, steam, test, water

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Potassium burning in water

K003/8980 Rights Managed

Downloadable master

Duration: 00:00:09

Frame size: 1920x1080

Frame rate: 25

Audio: No

Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

File size: 378.8M

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Capture format: DSLR - AVCHD

Codec: H.264

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