Thermochemistry

This is an activity in which different student groups can investigate different items of food. A sample of a food of known mass is burned, heating a calorimeter. Students record the temperature of water heated in the colorimeter, calculate the energy transferred to the water, and hence estimate the energy present per unit mass of food. Activity Energy content of food (demo)

In this activity students measure the temperature change in four chemical reactions and classify the reactions as exothermic or endothermic. Activity Endo- and exothermic reactions (demo)