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. | |
Licence : | Droits gérés |
Crédit : | Science Photo Library |
Model Release : | Non requis |
Property release : | Non requis |
Durée : | 28 Secondes |
Aspect ratio : | 16/9 |
Restrictions : | - |