Abstract In this paper, a simple observation method based on smart phone picture recording was established, which can be used in the measurement of melting point and boiling point, the observation of ammonium chloride's crystallization and many other phase change experiments. On the one hand, this method can obviously improve the observation effect of the phase change experiments and facilitate students to clearly and accurately capture and record the morphological changes in the phase change process. On the other hand, the recorded experiment process can be replayed time after time, which is convenient for the students' writing of the experiment report and teachers' inspection and guidance. So, this method based on the smart phone picture recording showed great help to improve students' enthusiasm and experimental effect.
YAO Su, WEI Shou-Lian, WANG Hong-Wu, LIU Yan-Qing, DENG Si-Hua. Phase Change Experiments' Observation Based on Smart Phone Picture Recording[J]. Chinese Journal of Chemical Education, 2019, 40(18): 70-72.