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

Caption: Test for oxygen gas using a glowing splint. The gas is produced by the decomposition of hydrogen peroxide, catalysed by solid manganese (IV) oxide. Hydrogen peroxide (H2O2) is unstable, and naturally decomposes very slowly at room temperature, producing water and oxygen gas. The speed of this decomposition can be greatly increased by a catalyst, however. The vigorous reaction produces large quantities of a gas, which bubbles off. When a glowing splint is introduced to the gas, it relights and burns brightly, indicating that it is oxygen.

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Oxygen relighting a glowing splint

K004/5238 Rights Managed

Downloadable master

Duration: 00:00:28.14

Frame size: 1920x1080

Frame rate: 25

Audio: No

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

File size: 283.1M

Original

Capture format: Sony FS700

Codec: Apple ProRes 422 HQ

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