Investigating temperature changes during dissolving , Class 8 Activity

Students of class 8 investigated how changing the mass of ammonium chloride affected the temperature change when ammonium chloride dissolves in water.
With the help of weighing machine they measured 2g , 4g, 6g ammonium chloride and put it in the conical flask . They poured water inside it and measured the temperature with the help of thermometer.
They observed with increasing the mass of ammonium chloride, temperature change is larger. This activity helped them to be more clear about the concept of temperature changes in a chemical reaction.