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复习要求 (1)常识性介绍 水的物理性质;水的污染 与防治及与人类的关系。 (2)认识 氢气的物理性质及主要用途;氢 气的工业制法。 (3)了解 氢气的化学性质;初步学会氢气 的实验室制法。
Review requirements (1) Common sense Introduction to the physical properties of water; water pollution and control and its relationship with humans. (2) Recognize the physical properties and main uses of hydrogen; industrial production methods for hydrogen. (3) Understand the chemical nature of hydrogen; learn firsthand about laboratory methods for producing hydrogen.