初中化学竞赛是为了激发学生学习的兴趣,引导学生联系实际学习化学,提高科学素质,以适应培养跨世纪人才的需要,还为了发现和选拔具有化学学习潜力的优秀学生。竞赛试题中有很多试题涉及STS内容。现从试卷中选一些试题进行分析讨论。试题16 汽车尾气中含有CO和NO等有毒气体,其净化过程如下:(1)在催化剂催化作 The junior high school chemistry competition is to stimulate students’ interest in learning, to guide students to contact the actual study of chemistry, improve scientific quality, to meet the needs of training cross-century talents, and to discover and select outstanding students with chemical learning potential. There are many questions in the contest questions related to STS content. Now select some questions from the test paper for analysis and discussion. Question 16 Car exhaust contains toxic gases such as CO and NO. The purification process is as follows: (1) Catalyzed by the catalyst