外研必修1-A-lesson-in-a-lab-课件.ppt--（课件中不含音视频）

1、Put the words in pairs or groups.air gas-oxygencontract-expandearth sun-moongas liquid-solid Look at the pictures.Do you know the names of the equipment？balanceBunsen burner test tubetongs crucible 2413conclusion aim result method目标目标 方法方法 结果结果 结论结论aimmethodresultconclusionWhat is the correct order

2、to describe the stages of a scientific experiment?Read the passage as quickly as you can and choose the best title for it.The Different Uses of Metals The Reaction of Metals The Reaction of Metals with Oxygen Passage AMatch names of metals to picturesMetals 金属金属Heated in oxygenReaction with water or

3、 steamPotassium 钾钾Burn to form an oxideReacting with cold waterSodium 钠钠Calcium 钙钙Magnesium 镁镁Reacting with steamAluminium 铝铝Zinc 锌锌Iron 铁铁Reacts slowlyPartial reactionCopper 铜铜Partial reactionNo reaction*an oxide=another substance+oxygen Read the passage again and answer the following questions:1.W

4、hich of the metals in the table reacts the most with oxygen and water?Potassium,sodium and calcium.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 a slow or fast reaction with steam?It has a slow r

5、eaction.5.Does copper react with water?No,it doesnt.What can we learn from Passage A?It is very important to know_.It is very useful in our daily life.metals can react with different substanceshowPassage BA Simple Scientific ExperimentNails are easy to rust in the damp air.Whats the difference betwe

6、en the pictures?Pre-reading:How many stages are there in a scientific experiment reportA Simple Scientific Experiment1._:_2._:3._:(1)(2)(3)4._:5._:3 clean iron nails;test tubes;test tube holder;cotton wool;oil;Bunsen burnerTask 1:Put the stages in the correct orderTo find out if iron rusts(a)(b)(c)h

7、alf-fill with.boil put inadd to leave resultRead the passage again and complete the sentences.1.In the first part of the experiment,the _ is dry,not wet.2.It shows that iron _ when the air is dry.airdoes not rust3.In the second part of the experiment,you must _ the water to make sure there is no _ i

8、n it.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.boilairsome oilairnailairObserve the following experiment carefully and then write down an experiment report A magical experimentAim To_Equipment You will need_ _Method First,squ

9、eeze_ Next,take your pen and_ Then write_ _ After that,_ Next,_ Finally,_Result The massage_ _Conclusion The passage appears when you heat it because_ _write a secret message with invisible ink.a lemon,a small container,a pen,some white writing paper,a candle and some matches.the lemon and pour the

10、juice into a container.dip it into the lemon juice.your message in lager letters on a clean sheet of white writing paper.blow on the paper to dry the lemon juice.light a candle with the matches.hold the paper near the candle flame.will gradually appear on the paper.The word are a light brown color.t

11、he lemon juice reacts with oxygen in the air.Aim Apparatus MethodResult Conclusion An Experimennt Report 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 lig

12、ht will be seen,and it lasts for a while.We can reach a _ that potassium _ with cold water.scientific experimentapparatusespourconclusionreactsSum up How can you do a scientific experiment successfully?First,we need to have an_ and prepare _ for the experiment before we do the experiment.Second,we m

13、ust use correct_to do the experiment and watch carefully.Then we can get the_and draw a_.aimapparatusmethodsresultconclusion Science plays an important role in our daily life.So we should love science.And we should own the scientific attitude towards our work and study.科学在我们的日常生活中非常重要，科学在我们的日常生活中非常重要，我们应该热爱科学，并且我们应该拥我们应该热爱科学，并且我们应该拥有一种科学的对待我们学习和生活的有一种科学的对待我们学习和生活的态度。态度。