Energy and chemical reactions

In the last two weeks, through a series of experiments, we have learned how to determine energy changes that occur during chemical reactions. Our experiments included a variety of chemical processes that required the use of different methods and equipment.
In one of the experiments, we measured the released energy during the combustion reaction using a self-made calorimeter, which allowed us to compare the efficiency of different fuels. Other experiments involved the measurement of temperature changes, which were then plotted on  a graph in order to calculate the energy changes during these reactions.
During our chemistry lessons we have learned a lot about experimental methods and how to effectively recycle the resultant waste. Luckily, the experiments went smoothly and we gathered enough data that will allow us to learn how to analyse data and how to evaluate the results. We had a valuable experience.