Research On The Application Of Smart Phone Light Sensor In Chemical Experiment

With the continuous development of information network technology,the functions of smart phones are becoming more and more powerful,coupled with the continuous development and breakthroughs of software,smart phones have played an important role in people 's daily lives.Reports on the application of technology in chemical experiments are endless,and smartphones are gradually used in chemical experiments as an auxiliary experimental tool.This study introduces smartphones to chemical experiments.Using the smartphone 's light sensor and the smartphone free App “Phyphox”,three chemical experiments were improved.The experiments based on the smartphone 's light sensor design are simple to operate,relatively cheap,and highly popular.It can inspire students' interest and motivation in chemistry,and is innovative and scientific.This thesis is divided into four parts:Part 1: Introduction.The research background,ideas,purpose,significance and research methods of this paper are summarized in detail.Part ? : Literature review and theoretical research.The research status of the application of smart phones in middle school chemistry experiments at home and abroad is summarized.Combining humanism theory and constructivism theory,the design principles based on smart phone photosensors in chemical experiments are proposed,and the research value and significance of smart phone photosensors in middle school chemistry experiments are proposed.Part ?: Three experimental cases of the application research of smart phone photosensors in chemical experiments.(1)Explore the effect of concentration on the chemical reaction rate based on smart phone photosensors.The use of smart phone photosensors and the free smartphone App "Phyphox" improved the experiment of the high school chemistry elective 4 "Principles of Chemical Reactions",Chapter 2,Section 2,"Factors Affecting the Rate of Chemical Reaction",and explored high manganese The effect of reactant concentration and acidification time on the reaction rate of potassium acid with oxalic acid.(2)Explore the optimal concentration of hydrogen peroxide as a bleaching agent based on smart phone photosensors.Use the smart phone light sensor combined with the free smartphone App "Phyphox" to explore the optimal concentration of hydrogen peroxide as a bleaching agent for bleaching magenta solutions.(3)Determination of the rate equation of acetone iodination reaction based on the spectrophotometric method of smartphone.Using the smartphone light sensor and the smartphone free App "Phyphox",the reaction order,rate equation and activation energy of the acetone iodination reaction were measured.Part ?: Summary and Outlook.In this paper,the results of three chemical experiments based on the application research of smart phone photosensors show that using the smart phone photosensor App method is a low-cost,simple,portable,intuitive and feasible method that can enable students to carry out experiments using the smart phone they carry Research makes experiment teaching interesting and scientific,and can better cultivate students' sense of innovation.At the same time,in the process of experimental research,the existing shortcomings are reflected and improved,and the expanded application of research results and the future development of smart phone photosensors in chemical experiments are prospected.