Module-5-A-Lesson-in-a-Lab-课件.ppt

To learn about some vocabulary and knowledge related to science and experiments To know how to do a simple experiment and write the report about it in English 3. To raise interests in science and form the right scientific attitude. Teaching Aimslabtest tubebalanceBunsen burnercrucible本生灯（煤气喷灯）本生灯（煤气喷灯） When the iron is heated(加热） it will When the iron is cooled(遇冷） it willexpandcontractHow much do you know about general science?How many states does matter exist as?Use your mind!solidliquidgasoxygen metalRead the words together Step I Pre-reading Put these words in the correct order to describe the stages of a scientific experiment.conclusion aim result method When we do an experiment ,we should first of all have an _.We should use proper _.We should find out the _and get a_.aimmethodsresultconclusion Scanning: Listen to passage A quickly and choose the best title for it. The Different Uses of Metals The Reaction of Metals The Reaction of Metals with OxygenPassage A Careful Reading ;Read passage A carefully and answer: 1. Which of the metals in the table reacts the most with oxygen and water? 2. What happens when you heat calcium in oxygen? 3. Which metals react with steam? 4. Does iron have a slow or fast reaction with steam? 5. Does copper react with water? Potassium, calcium and sodium.It burns to form an oxide.Magnesium, aluminium and zinc.It has a slow reaction.No, it doesnt. Passage B :Some important words about the experiment:apparatus (apparatus (仪器仪器, ,设备设备) ) holder (holder (台、架等台、架等) )支持物支持物, , 固定器固定器cotton wool cotton wool 棉絮棉絮bunsen burnerbunsen burner本生灯本生灯（煤气（煤气喷灯）喷灯）Iron in dry airPut/ push/ leaveIron in air-free water Half-fill/boil/ make sure/ put/ add/keep-out ofIron in ordinary waterHalf-fill and add/ leave Stage A(Starting experiment) Stage B(1 week later) Stage C (Result )_ _- nails- nails- nails- nails- nails- nails_cotton woolcotton woolIron doesnt rustOil layerwaterOil layerwaterIron doesnt rustwaterwaterIron rusts Consolidation 1 Answer these questions in groups of four. 1) In the first part of the experiment,what is the use of the cotton wool in the test tube? 2.) In the second part ,what is there on the surface of the water in the test tube? 3) What is the use of the oil?4) Why are the nails in the test tube with ordinary water rusty? There is oil on the surface of the water in this test tube. The oil can keep air out of water.The cotton wool can keep air dry.Iron reacts with oxygen in ordinary water and forms rust. Lets do a simple experiment to test if magnesium can burn in the air and write a short report:Aim:Methods:Result:Conclusion:To find out if Magnesium burns in the air 1)use a pair of tongs to pick up some magnesium2)light it Magnesium is burning with a bright flame in the airMagnesium can burn in the air Magnesium can burn in the air Homework: Go into your science lab and tell your class the apparatus.