外研版必修一Module 5 A Lesson in a Lab reading课件(共18张PPT).PPT

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1、Module 5 A Lesson in a LabReading,Pre-taskGW:What words can you think of when you look at the picture?,science-scientific experiment,apparatusequipment,Bunsen burner,test tube,tube holder,Watch&Write,metal:potassium钾,burnreact with(reaction)form(new substance),GW:apparatuses,conclusion,reacts,experi

2、ment,pour,scientific,This is a _ _ done in a lab.First,get all the _ ready on the desk,a container(容器)with some cold water in it,some potassium(钾)and a spoon.Secondly,_ some potassium into the water.Then a strong light will be seen,and it lasts for a while.We can reach a _ that potassium _ with cold

3、 water.,scientific experiment,apparatuses,pour,conclusion,reacts,Task-cycle Passage A,iron,What&Why,GW:Match names of metals to pictures,potassium,sodium,calcium,magnesium,aluminium,zinc,iron,copper,First-reading,Qs:What should we know when we use metals?Which metal reacts most with water,potassium

4、or iron?,It is important to know how they react withdifferent substances.,Potassium reacts most with water.,Choose the best title for the passage.The Different Uses of Metals The Reaction of Metals The Reaction of Metals with Oxygen,Interview(3 reporters&scientists),Qs(more interesting Qs are welcom

5、e)Which metals reacts the most with oxygen and water?What happens when you heat calcium in oxygen?Which meals reacts with steam?Does iron have a slow or fast reaction with steam?Does copper react with water?,Potassium.,It burns to form an oxide.,Magnesium,aluminium,zinc,Slow.,No,it doesnt.,Passage B

6、Task:Write an experiment report,Can we put iron nails in wet air?,rust,conclusion,method,result,aim,apparatus,An Experiment Report1._:2._:3._:(1)(2)(3)4._:5._:,Aim,Apparatus,Method,Result,Conclusion,Scanning,Right or wrong.Iron rusts easily in dry air.To make sure theres no air in the water,you have

7、 to boil the water for 3 minutes.We dont know whether iron rusts in ordinary water.,F,T,F,Detailed-reading,1.Fill in the form on P45.2.Jigsaw reading&Fill&Act,To find out if.,Iron nails,test tubes,oil,tube holders,cotton wool,Bunsen burner,(3)half-fill.with,add,leave.for,After a week,rust,(not)rust

8、in,(1)put.at the bottom of;push.down leave.for,(2)half-fill.with.,boil,put,add.to,keep.out of,leave.for,Jigsaw reading&Fill&Act,Complete the sentences using what we learnt,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 _ _

9、that there is no air in it._ some oil to the water can _ the air out of it.It shows that _ dont rust in _ water.In the third part,_ the tube with water.It shows that they rust in _ water.,air,doesnt rust,boil,make sure,Adding,keep,nails,air-free,half-fill,ordinary,Can you write a simple experiment r

10、eport according to what you watch?Discuss,then write it down.,to find out if potassium reacts with cold water.,a container,cold water,a spoon,potassium,Half-fill the container with cold water.,(2)Pour a spoonful of potassium into the water.,The potassium burns.,Potassium reacts with cold water.,Discussion,Do you like doing scientific experiments?What should you pay attention to when you are carrying out an experiment in a lab?,HW:Write a report,