Inquiry on Difference Method Measurement Experiment of Gas Produced by Solid-Liquid Reaction: Calculation of Producing H2, O2 and CO2 in Junior High School Chemistry
ZHOU Mei-Hua
Changshu Foreign Language Middle School, Changshu 215500, China
Abstract In some chemistry exams for senior high school entrance examination, test designers believe that the differences in the total mass before and after the solid-liquid reaction is the mass of the gas produced. This paper discussed the solid-liquid reaction experiments of producing H2, O2 and CO2 by using a beaker; the results showed that those exams had a certain degree of one-sidedness. Understanding this experimental fact could help chemistry teachers set reasonable and factual questions, and cultivate students a scientific attitude to respect facts and pursue scientific truth.
ZHOU Mei-Hua. Inquiry on Difference Method Measurement Experiment of Gas Produced by Solid-Liquid Reaction: Calculation of Producing H2, O2 and CO2 in Junior High School Chemistry[J]. Chinese Journal of Chemical Education, 2019, 40(13): 91-93.
