Question

What assumptions can be made in an experiment that is determining the melting point of stearic acid​

Answer 1

Answer:

In this experiment, a solid turns into a liquid and then the liquid turns into a solid. The energy changes are examined

The students will take the temperature of stearic acid at regular intervals as they heat and cool it. They can observe the melting and freezing points of the acid and can plot a graph. This experiment could also be done using data-logging equipment

This practical takes quite a long time to carry out. Students can begin by simply recording their data but, once they get the hang of what they are doing, most should be able to plot the graph at the same time as taking readings. If data-loggers are being used then students will need another activity to be doing alongside the experiment.