Caption: Endothermic reaction. View of a digital thermometer display during the mixing of barium hydroxide and ammonium chloride. A beaker containing the two chemicals is set on a block of wood dampened with water. As the chemicals are mixed, there is a dramatic drop in temperature. Here, during the mixing, the temperature drops from 8C to -11C over about 25 seconds. This freezes the water beneath the beaker so that the block of wood sticks to it.

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Keywords: 28 seconds, aluminium chloride, barium hydroxide, beaker, celsius, chemical, chemicals, chemistry, cold, cooling, demonstration, digital thermometer, drop, dropping, dynamics, endothermic, experiment, fall, falling, freezing, heat, inorganic, loss, mix, mixing, mixture, rapid, reaction, thermodynamics, transfer

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Endothermic mixing reaction

K003/8993 Rights Managed

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Duration: 00:00:28.16

Frame size: 1920x1080

Frame rate: 25

Audio: No

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

File size: 838.8M


Capture format: DSLR - AVCHD

Codec: H.264

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