Module 5A Lesson in a Lab- Reading 课件 外研必修一：.ppt

* * Module 5 Reading B B. aim D. method A. result C. conclusion D A C The steps of a scientific experiment 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 zxxk Passage A The Reaction of Metals Aim: Apparatus: Methods: Result: Conclusion: How different metals react with water and oxygen. (1) Heated in oxygen (2) put into water or steam No reaction Partial reaction Copper Partial reaction Reacts slowly Iron Zinc Aluminium Reacting with steam Magnesium Calcium Sodium Reacting with cold water Burn to form an oxide Potassium Reaction with water or steam Heated in oxygen Metals The Reaction of Metals 1. It is easy to do experiments in a lab 在实验室里做实验很容易。 2. It is not so difficult to study English well. 学好英语并不难。 3. Your books are out of order, you should put them in order. zxxk 你的书太乱了,你应该把它们按顺序放好。 4. Your name is at the top of the list. 你的名字在名单的最前面。 Read the passage again and answer the following questions: z.x,xk 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. Complete the passage with proper words according to passage A. Metals are very important, so when using them we should know how they _____ with different substances. Take iron used in ________ equipment for example, when ______ in oxygen, it will react slowly. When it is put together with water or _____, there will be a partial _______. reaction react electrical heated steam Read the passage and fill in the chart. Passage B Stage A (starting experiment) Iron in ordinary water Iron in air-free water Iron in dry air cotton wool water water Stag