外研版 高一年级 ( 必修 1) 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 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

MetalsHeated in oxygen Reaction with water or steam Potassium Burn to form an oxide Reacting with cold water Sodium Calcium Magnesium Reacting with steam Aluminium Zinc IronReacts slowlyPartial reaction CopperPartial reactionNo reaction 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 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 Iron in dry air Iron in air-free water Iron in ordinary water Stage A (starting experiment) cotton wool water

Stage B (1 week later) Stage C (Result) 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 let’s 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.

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

1.A student didn’t 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.

1.Learn the new words by heart. 2.Read Passage A and B and try to retell it.