They’re called endothermic reactions. If you take some citric acid solution and combine it ... The beaker now contains sodium chloride and water. The temperature on the thermometer has risen ...

Endothermic reactions include solid citric acid and sodium hydrogencarbonate, and dissolving ammonium nitrate in water. Demonstrate a spectacular reaction such as the thermite reaction or the ...

Production of carbon dioxide from reaction of citric acid and baking soda ...