Abstract Taking the quantitative exploration process of experiment “reaction of sodium peroxide and water” in senior high school chemistry, aiming at the abnormal phenomenon that the solution immediately turns dark red when it is dropped into phenolphthalein after reaction, and then gradually the solution turns light or even fades, the reaction process is explored from multiple dimensions by controlling variables. It highlights the important role of quantitative experimental activities in improving students' awareness of experimental exploration and innovation, evidence reasoning, model cognition and other chemical core literacy; sums up the general idea of experimental teaching activities of element compound module; better explains that chemistry is an experiment-based science.
ZHANG Bao-Hui. Improving Key Competencies in Quantitative Experiment Exploration of Reaction of Sodium Peroxide and Water[J]. Chinese Journal of Chemical Education, 2020, 41(21): 49-54.
