外研版高中英语必修一Module5Readingandvocabulary课件

Module 5 A lesson in a lab Look at the pictures. Do you know the names of the equipment？ test tube crucible tongs balance Bunsen burner potassium （钾） Let’s get to know some metals? sodium(钠) calcium(钙) magnesium(镁) aluminum （铝） zinc（锌） iron（铁） copper （铜） What is the correct order to describe the stages of a scientific experiment? aim method result conclusion P44 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 Read the passage again and answer the following questions (p44) 1. Which of the metals in the table reacts the most with oxygen and water? potassium, sodium and calcium 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 . Task1: Read the passage carefully and fill in the table on page 45. Task2: Read the passage again and complete the sentences on page 46. Passage B Passage B What’s happening to the nail in the pictures? Pre-reading: Read the passage and complete the table.P45 cotton wool nails Iron does not rust. water Iron does not rust. water water 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. P46 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 electrical will ____ under 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 _____. react oxide On the other hand , if it is put together with water or _____, there will 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 (language points) Useful phrases • think of • be used in • electrical equipment • it is + adj.+ (for sb.) to do sth. • react with • put ... in order 按顺序排列...... • at the top of ... • at the bottom of ... • find out • scientific experiment • leave （保持，使……处于某种状态） • keep… out of… (遮挡，使……不进入） • make sure • add … to … 往 ...... 加入 ...... • add to (=increase) 增加；添加；加到 • air-free (无空气的） 1.Master the useful words and phrases by heart. 2.Read the passage A and B and try to retell it . Homework for you