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(本课选自人教版义务课程标准教材《化学》七年级上册。)【教学建议】教法建议:在讲氢气的性质之前,已学过氧气的性质、制法和氢气的实验室制法。根据已有的知识水平、化学大纲的要求和特点,确定恰当的知识范围和实验内容,使学生了解氢气的物理性质,掌握氢气的可燃性、还原性及
(This lesson is from the People’s Education Volunteer course standard textbook chemistry seventh grade.) Teaching Suggestions Shariah advice: Before we talk about the nature of hydrogen, have learned of the nature of oxygen, manufacturing methods and hydrogen laboratory system law. According to the existing level of knowledge, the requirements and characteristics of the chemical syllabus, identify the appropriate scope of knowledge and experimental content to enable students to understand the physical properties of hydrogen, to master the hydrogen flammability, reducing and