Endothermic Reaction #3
by Science Photo Library
Title
Endothermic Reaction #3
Artist
Science Photo Library
Medium
Photograph - Photograph
Description
End of an endothermic reaction. Solid barium hydroxide and solid ammonium chloride have been mixed in a flask that is sitting on a damp piece of wood. As the two chemicals are mixed an endothermic, or heat-absorbing, reaction takes place and the temperature inside the beaker drops dramatically. The digital thermometer shows the temperature in the flask to be minus 23 degrees Celsius. The experiment started at 21 degrees Celsius. The drop in temperature freezes the water between the flask and wooden block, sticking the two together.
Uploaded
July 28th, 2016
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