《高中英语课件》外研版 必修1 Module 5 A.pptVIP

balance glass rod beaker 坩埚 crucible tongs Reading and Vocabulary Passage A electrical adj. electricity n. equipment n. react vi. reaction n. substance (s) steam n. oxygen oxide n. 用电的，与电有关的 电 设备，装备 （化学）反应 氧化物 蒸汽， 水气 物质 氧气 Passage A – Fast Reading(2m) Read Passage A and choose the best title for it. The Different Uses of Metals The Reaction of Metals The Reaction of Metals with Oxygen 1.What should we know when we use metals? 2.Which metal reacts most with water, potassium or iron? How they react with different substances. Potassium reacts most with water. What can you see in the picture? A lab. test tube test tube holder Bunsen burner apparatus 仪器，器械 balance Do you know how we can carry out an experiment successfully? What should you do in different stages? It’s interesting to do an experiment. But we’ve got a lot of things to do before an experiment. First, we should be clear about the aim of the experiment, the apparatuses we need and how we can carry it out (we call it “method”).We watch what’s happening and get the result. Lastly it is important to have a discussion on the result of the experiment. Don’t forget to write down the conclusion. Put the words in the right place .conclusion , aim , result , method, apparatus An Experiment Report 1. __________: 2. __________: 3. __________: (1) (2) (3) 4. __________: 5. __________: Aim Apparatus Method Result Conclusion Passage B – Pre-reading  Q: Do nails rust in wet air? Passage B – 3.Scanning(4m) True or False . Iron rusts easily in dry air. To make sure there’s no air in the water, you have to boil the water for 3 minutes. We don’t know whether iron rusts in ordinary water. F T F Passage B – (3m) Complete the passage using what we’ve learnt in Passage B. In the first part of the experiment, the ____ is dry. It shows that iron ___________ in dry air. In the second part, you must _____ the water to