Sequence of shots showing an endothermic reaction. At left solid barium hydroxide and solid ammonium chloride have been place in a flask that is sitting on a damp piece of wood. The digital thermometer shows the temperature in the flask to be 21 degrees Celsius. As the two chemicals are mixed an endothermic,or heat-absorbing,reaction takes place and the temperature inside the beaker drops dramatically. This drop in temperature freezes the water between the flask and wooden block,sticking the two together (right) | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library |
Bildgröße: | 7598 px × 2763 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |