Credit: RHYS LEWIS & MINH TAN PHAM, AHS, DECD, UNISA/SCIENCE PHOTO LIBRARY

Caption: High-speed footage of potassium metal reacting explosively as it is dropped in water. Potassium reacts with water to form soluble potassium hydroxide and hydrogen gas, which ignites with a lilac flame due to the heat of the reaction. The water turns pink due to the presence of the indicator phenolphthalein, which turns pink in alkaline solutions, such as that of potassium hydroxide. Potassium is an alkali earth metal, all of which are highly reactive due to their having an unpaired electron in their outer shell.

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Keywords: acid-base, alkali, alkali earth, alkaline, base, basic, black background, block, chemical, chemistry, chunk, demonstrating, demonstration, drop, dropped, education, educational, exploding, explosion, explosively, fire, flame, gas, group one, high speed, high-speed, hydroxide, indicator, metal, ph, phenolphthalein, pink, potassium, reacting, reaction, science, slo mo, slo-mo, slow motion, slowed down, soluble, solution, steam, vapor, vapour, water, water bath

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Potassium reacting in water, high-speed

K004/0584 Rights Managed

Downloadable master

Duration: 00:02:28

Frame size: 1920x1080

Frame rate: 25

Audio: No

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

File size: 5.2G

Original

Capture format: Sony FS700

Codec: H.264

Interlaced: Yes

Please contact Science Photo Library if you require the original, or other formats.

 

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