Change of state

evaporationIn this activity students investigate the process of evaporation and use a temperature sensor to record temperature changes during evaporation of water and alcohol. Activity Evaporation of water (demo)
ethanol moleculeIn this activity students investigate process evaporation. They use a temperature sensor to record temperature changes during evaporation of alcohols. They investigate how the molecular mass of evaporating alcohol affects the rate of evaporation. Activity Evaporation of alcohols (demo)
Stearic acidIn this activity, the cooling of stearic acid, changing from liquid to solid is studied. Students record the temperature of stearic acid as it cools. Activity Cooling curve of stearic acid (demo)