Credit: NILERED/SCIENCE PHOTO LIBRARY

Caption: Melting and cleaning potassium in mineral oil. This footage shows part of a series of steps in a process used to clean and purify potassium that had acquired a layer of oxides. Before the stage shown here, the oxides were removed from the potassium by chemical treatment. Then the partially-cleaned potassium was placed in this beaker of mineral oil to be melted down. Here, the potassium has melted as the mineral oil was heated, forming the spherical mass being manipulated with a spatula. Some impurities have fallen to the bottom of the beaker. When cooled, the remaining solid impurities on the surface of the potassium can be scraped off. This is followed by further cleaning stages.

Release details: Model release not required. Property release not required.

Keywords: beaker, chemical, chemistry, clean, cleaning, clip, demonstration, educational, element, element k, experiment, film, footage, heat, heated, lab, laboratory, melt, melting, mineral oil, motion, no-one, nobody, potassium, purification, purifying, school science, spatula, stirring

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Melting and cleaning potassium

K007/2040 Rights Managed

Downloadable master

Duration: 00:00:26.02

Frame size: 1920x1080

Frame rate: 29.97

Audio: No

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

File size: 506.4M

Original

Capture format: Unknown

Codec: H.264

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