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

Caption: Decomposition of magnesium silicide in a bath of hydrochloric acid. Magnesium silicide (Mg2Si) reacts with the acid to produce silane (SiH4), the silicon equivalent of methane. Silane is far more reactive than methane, though, and instantly reacts with atmospheric oxygen, combusting with a flame and a sharp crack to form silica and water.

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Keywords: acidic, bath, chemical, chemistry, combusting, combustion, crackle, crackles, crackling, decomposing, decomposition, demonstrating, demonstration, education, educational, glassware, hydrochloric acid, igniting, lab, laboratory, magnesium silicide, oxygen, pop, popping, pops, reaction, reactive, science, silane, spontaneous

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Decomposition of magnesium silicide

K004/4983 Rights Managed

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Duration: 00:00:55

Frame size: 1920x1080

Frame rate: 25

Audio: Yes

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

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Capture format: Sony FS700

Codec: Apple ProRes 422 HQ

Interlaced: Yes

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