外研版高中英语教学课件Book1 Module 5 Period 2 Reading(共21张PPT).ppt

1、Module 5 A lesson in a labReadingPassage Aelectricity ,ilektristi n.电electrical ilektrik()l equipment 电器设备react vi.（化学）反应reaction n.反应oxide ksaid n.氧化物steam n.蒸汽，水气Read the passage and choose the best title for it.The Different Uses of Metals The Reaction of Metals The Reaction of Metals with Oxygen

2、 Read the passage again.Answer these 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

3、a slow or fast reaction with steam?It has a slow reaction.5.Does copper react with water?No,it doesnt.We are living in a world made of different kinds of _.Some of them exist in the form of solid,some in the form of _ and some gas.Some belongs to the metal family such as calcium,zinc and _.Most of t

4、hese substances can _ with water and can rust(生锈)after being put in water for some time.When metals are _ in the air you will find some _ is produced.Also metals _ when it is very hot and _ when it is rather cold.Finally,if you put different substances together,a _ is formed.How interesting it is!su

5、bstancesliquidsodiumreactburntoxideexpandcontractmixtureWhat can you see in the picture?I can see a lab.What apparatus(仪器)do we see in the lab?,preitsbalancetest tube holdertest tubecrucible坩埚glass rod rdbeakerbi:k 烧杯Bunsen burner本生灯/煤气加热灯 tongstz钳子tju:b kru:sblalcohol burnerWhat is the correct orde

6、r to describe a scientific experiment?aimmethodresultconclusionapparatusconclusion apparatus aim result methodCarry out an experiment successfully.Its interesting to do an experiment.But weve got a lot of things to do before an experiment.First,we should be clear the aim of the experiment,the appara

7、tus we need and how we can carry it out(we call it“method”).We watch whats happening and get the result.Lastly it is important to have a discussion on the result of the experiment.Dont forget to write down the conclusion.Passage B Pre-readingCan we put nails in wet air?Iron nails rust in wet airPut

8、the words in the right orders of the experiment report.An Experiment Report An Experiment Report1._:1._:2._:2._:3._:3._:(1)(1)(2)(2)(3)(3)4._:4._:5._:5._:conclusion method result aim apparatusAimAimApparatusApparatusMethodMethodResultResultConclusionConclusionRead the passage again and then fill in

9、the form below.To find out if.iron nails test tubes oil tube holders iron nails test tubes oil tube holders cotton wool Bunsen burner cotton wool Bunsen burnerAfter a week,After a week,.(not)rust in(not)rust in.Read the passage and complete the table.cottoncottonwoolwoolnailsnailsIron does Iron does

10、 not rust.not rust.waterwaterIron doesIron doesnot rust.not rust.waterwaterwaterwaterIron rusts.Iron rusts.Page 46:Complete the passage.In the first part of the experiment,the _ is dry.It In the first part of the experiment,the _ is dry.It shows that iron _ in dry air.shows that iron _ in dry air.In

11、 the second part,you must _ the water to In the second part,you must _ the water to make sure make sure that there is no _ in it.that there is no _ in it.You add You add _ to the water _ to the water to keep the to keep the _ out of it.It _ out of it.It shows that _ dont rust in _ water.shows that _

12、 dont rust in _ water.In the third part,_ the tube with water.It In the third part,_ the tube with water.It shows that they rust in _ water.shows that they rust in _ water.airairdoesnt rustdoesnt rustboilboilairairsome oilsome oilairairnailsnailsair-freeair-freehalf-fillhalf-fillordinaryordinary1.Wh

13、en 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.

14、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 me

15、tals 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。3.Below is a description of a sample scientific experiment.Below is/are.以下是.Here is/are.The following is/are.is/are as follows.Assignment 1.Workbook Period 2 Module 5；2.Write a scientific experiment report.