《微课作业ALessonintheLab琼山中学陈帝来91950.ppt》由会员分享，可在线阅读，更多相关《微课作业ALessonintheLab琼山中学陈帝来91950.ppt（25页珍藏版）》请在三一办公上搜索。
1、A Lesson in a Lab,Competition,1,2,Revision复习,Match,Task 1:Put these words into three groups,air glass iron metal oil oxygen salt steam steel water,1 Gas:steam _ _2 Solid:_ _ _ _ _3 Liquid:_ _,air,oxygen,water,glass,iron,metal,salt,steel,oil,2,potassium,sodium,calcium,magnesium,aluminium,zinc,iron,co
2、pper,Task 2:Match names of metals to pictures,Reading and Vocabulary阅读与词汇,2,4,1,3,The stages of a scientific experiment,conclusion aim result method,目标 方法 结果 结论,aim,method,result,conclusion,It is a piece of electrical equipment.,电力/电器设备,*an oxide=another substance+oxygen,Read the passage and choose
3、the best title for it.,Passage A,The Different Uses of Metals The Reaction of Metals The Reaction of Metals with Oxygen,Read the passage again and answer the following questions:,1.Which of the metals in the table reacts the most with oxygen and water?Potassium,sodium and calcium.2.What happens when
4、 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 doesnt.,Complete the passage with proper words according to passage A.Me
5、tals are very important,so when using them we should know how they _ with different substances.Take iron used in _ equipment for example,when _ in oxygen,it will react slowly.When it is put together with water or _,there will be a partial _.,reaction,react,electrical,heated,steam,Passage B,A Simple
6、Scientific Experiment,A Simple Scientific Experiment1._:_2._:3._:(1)(2)(3)4._:5._:,aim,method,result,conclusion,apparatus,3 clean iron nails;test tubes;test tube holder;cotton wool;oil;Bunsen burner,Task 2 Fast-reading,Task 1:Put the stages in the correct order,To find out if iron rusts(a)(b)(c),cot
7、ton wool,nails,water,water,water,The nails havent rusted.,The nails donot rust.,The nails rust.,Iron doesnt rust in dry air.,Iron doesnt rust in air-free water.,Iron rusts in ordinary water.,Conclusion,1.In the first part of the experiment,the _ is dry,not wet.2.It shows that iron _ when the air is
8、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.,P 46,4.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.,s
9、ome oil,air,iron,air,你知道实验室有哪些规则吗？,了解小常识,请点击观赏,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 will _ under,elec
10、trical,react,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 _.,oxide,On the other hand,if it is put together with water or _,there will be a _ reaction.Next lets do an _ to support the a
11、bove.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,Learn the new words by heart.Read Passage A and B and try to retell it.,Homework,Thank you!,
