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

Caption: Elephant's toothpaste. Footage of a demonstration of the rapid decomposition of hydrogen peroxide during an experiment known as 'elephant's toothpaste'. A solution of hydrogen peroxide is placed in a measuring cylinder, along with some liquid soap (such as washing-up liquid) and some food colouring. When a catalyst such as potassium iodide is added (as shown here), the hydrogen peroxide rapidly decomposes to water and oxygen. The oxygen is trapped as bubbles in the liquid soap and foams out of the flask. The reaction is exothermic and hence the foam can get very hot.

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

Keywords: apparatus, chemical, chemist, chemistry, classic, clip, decomposition, demonstrating, demonstration, demonstrator, education, educational, elephant's toothpaste, equipment, exothermic, experiment, film, foam, footage, human, hydrogen peroxide, lab, laboratory, liquid soap, measuring cylinder, motion, one person, oxygen gas, people, person, potassium iodide, reacting, reaction, school science, scientist, video

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Elephant's toothpaste

K005/6226 Rights Managed

Downloadable master

Duration: 00:00:17

Frame size: 1920x1080

Frame rate: 25

Audio: Yes

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

File size: 531.0M

Original

Capture format: Unknown

Codec: Apple ProRes 422 (HQ)

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

 

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