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外研版 高一年级 (必修1) Module 5,英语课件,Reading,What can you see in these pictures?,B. aim,D. method,A. result,C. conclusion,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,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,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.,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:,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 doesnt.,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,cotton wool,water,water,nails,water,Iron does not rust,Iron does not rust,Iron rusts,1. In the first part of the experiment, the _ is dry, not wet. 2. It shows that iron _ when the air is dry. 3. In the second part of the experiment, you must _ the water to make sure there is no _ in it.,air,does not rust,boil,air,Read the passage again and complete the sentences.,4. You add _ to the water because this keeps _ out of it. 5. It shows that _ does not rust in water that has no _ in it.,some oil,air,nail,air,Complete the passage with proper words according to Passage A and B.,It is hard to think of a world without metals. Different metals have different uses, for example, iron can be used in _ equipment. But above all we should know whether it will _ under,electrical,react,different conditions. Otherwise it will keep the equipment from working well. As we all know, if iron is heated in oxygen, it will react slowly but will not form an _.,oxide,On the other hand, if it is put together with water or _, there will be a _ reaction. Next lets do an _ to support the above. First, get a test tube filled with water and put it over the _ to _ for three minutes.,steam,partial,experiment,Bunsen burner,boil,Then put three or four clean nails in the water with some oil added to it and leave the tube for one week. What happens? The iron does not _ in air-free water. Another experiment, if you put the nails in the tube with the air in it for one week, then what happens? Iron rusts in _ water.,rust,ordinary,1. When we use metals, it is important to know how they react with different substances, for example, water and oxygen. = When we use metals, we should know how metals react with different substances, for example, water and oxygen, which is very important.,Difficult sentences,本句是一个复合句，其中when引导时间状语从句；在主句中，it为形式主语，真正的主语是动词不定式短语to know . substances，其中how . substances为how引导的宾语从句，作know的宾语， for example引出同位语，表示举例。,2. Here is a table with the metals that react most at the top, and the metals that react least at the bottom. = A table is here. At the top of the table we can see the metals that react most and at the bottom of the table we can see metals that react least.,本句使用了倒装语序。句子的主语是a table，后面的with . bottom作定语修饰a table；两个that都引导定语从句修饰the metals。 句意: 这里有一个表格，反应最强烈的金属在最上面, 反应最弱的在最下面。,Read about an incident during a chemistry lesson and choose the best summary.,Reading on P93,A student didnt follow the instructions carefully. He took the wrong liquid from the cupboard and nearly poisoned the class. 2.The chemistry teacher was demonstrating an experiment when she heated a poisonous liquid. There was so much smoke that the students had to leave the room.,3. A student was doing a chemistry experiment when he accidentally heated the wrong liquid and caused an incident in the laboratory.,Read the passage again and answer the questions:,1. What substances were they using? Baking soda and hydrochloric acid. 2. What substances were the students making? Salt.,3. How can they make the reaction quicker? By making the mixture hotter. 4. What mistakes did Paul make? He used the wrong liquid.,5. Why did he make the mistake? Because there was no label on the bottle. 6. What happened when Paul heated the liquid? It formed a thick cloud of white gas.,7. Why did the teacher send the students out of the room? Because the liquid was acrylamide and the gas was poisonous. 8. What lesson did the incident teach the students and the teacher? Never to leave a bottle without a label in the chemistry lab.,Learn the new words by heart. Read Passage A and B and try to retell it.,Homework,同学们,来学校和回家的路上要注意安全,同学们,来学校和回家的路上要注意安全,同学们,来学校和回家的路上要注意安全,同学们,来学校和回家的路上要注意安全,
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