高中英語(yǔ)module5alessoninalab第二課時(shí)課件外研版必修1(已修改)
2024-12-03 18:57 本頁(yè)面
【正文】 Reading and vocabulary Read the passage as quickly as you can and choose the best title for it. The Different Uses of Metals The Reaction of Metals The Reaction of Metals with Oxygen Passage A We can reach a conclusion that it is important for us to read books. It is our aim to build up a harmonious society. It is a piece of electrical equipment. The stone contains potassium sodium calcium magnesium The wheel is made of aluminum. zinc oxide Nails are easy to rust in the damp air. Water boils at 100 176。 C. conclusion aim electrical potassium sodium calcium magnesium aluminum zinc copper oxide rust boils Read the passage again and answer the following questions: 1. Which of the metals in the table reacts the most with oxygen and water? Potassium, calcium and sodium. 2. What happens when you heat calcium in oxygen? It burns to form an oxide. 3. Which metals react with steam? Magnesium, aluminium and zinc. 4. Does iron have a slow or fast reaction with steam? It has a slow reaction. 5. Does copper react with water? No, it doesn’t. Read the passage and fill in the chart. Iron in dry air Iron in airfree water Iron in ordinary water Stage A (starting experiment) cotton wool water water Passage B Stage B (1 week later) Stage C (Result) nails water Iron does not rust Iron does not rust Iron rusts Read the passage again and plete the sentences. 1. In
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