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Elephant toothpaste reaction

K004/0907

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Credit

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

Caption

This reaction produces prodigious amounts of foam due to the rapid decomposition of hydrogen peroxide into water and oxygen. In this reaction, hydrogen peroxide solution (35%, 100mL) is added to a one-litre measuring cylinder. A small amount of liquid detergent is added, which traps the oxygen gas produced. Red food dye is also added, for show. Lastly, a catalyst (solid potassium iodide) is added to the reaction vessel. This greatly speeds the reaction, by providing a more favourable energy pathway.

Release details

Model release not required. Property release not required.

Downloadable Master

  • Duration: 00:00:39
  • Audio: No
  • Format: Photo - JPEG

Original

  • Capture Format: Sony FS700
  • Codec: H.264
  • Interlaced: No
  • Frame Size: 1920 x 1080

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