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外研必修1高一英语课件:Module5 Reading

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  Module 5  A Lesson in a Lab

A Simple Scientific Experiment
★To know some metals and their 
 reactions with some substances
★To learn how to do an experiment
★ To be able to retell the main points in 
 the text
★ To build up the love for science 
   
Choose the best title for Passage 
             A.
  1.The Different Uses of Metals
  2.The Reaction of Metals
  3.The Reaction of Metals with Oxygen
Read  Passage A again and answer the questions
    
   vWhich metals react the most with oxygen 
    and water?   Potassium,sodiumPotassium,sodium  andand  
                 calsiumcalsium..
   vWhat happens when you heat calcium in 
    oxygen?  ItIt  burnsburns  toto  formform  anan  oxide.oxide.
   vWhich metals react with steam?
     Magnesium,aluminium,andMagnesium,aluminium,and  zinc.zinc.
   4. Does iron have a slow or fast reaction 
    with steam? Slow.Slow.
   5. Does copper react with water?
     No,No,  itit  doesn’t.doesn’t.
After learning Passage A
   Do you think it is scientificto make 
Goujian Sword by using copper
What can we learn from Passage A?

     It is very important to know___how
__________________________.metals can react with different substances  
It is very useful  in our daily life.
                 Passage B

 How many stages are there in 
a scientific experiment report
                                    Iron in 
  Iron in dry air Iron in air-free 
                     water       ordinary water

       →①               ③___oil      →ordinary 
       cotton____ wool  →               water
                        →water       ⑤
                                     →
                        ④              rusty____ nails
        ②               →___nails
        → ___nails

 Use of cotton wool Use of oil  Why it rusts
⑥Keep______________ the nails dry Keep______________ air out of the⑧______________Air in the water
                ⑦__________ water
      Conclusion
                   

 Iron rusts in____________ordinary water . 
 Iron doesn’t rust in _____dry air
and___________air-free water .  
              

half-fill …with.. ①       boil …    ②


               ③
   put … in…           add …to …    ④


   leave …   ①                result②
               ⑤                    ⑥
Observe the following experiment 
  carefully and then write down 
     an experiment report 


               
                         
              An Experimennt Report
   Aim   toto  findfind  outout  ifif  potassiumpotassium  reactsreacts  withwith  coldcold  
         water.water.
Apparatus aa  container,container,  coldcold  water,water,  potassium,potassium, 
         filterfilter  paperpaper(滤纸(滤纸),),  aa  pairpair  ofof  tweezers(tweezers(镊子)镊子)

                 (( 1)Half-fill 1)Half-fill                  thethe        containercontainer         withwith  coldcold  water.water.
 Method    (2)Take(2)Take  aa  piecepiece  ofof  potassiumpotassium  outout  ofof  thethe  
           oil.oil.
           (3)Dry(3)Dry  thethe  potasiumpotasium  withwith  thethe  paper.paper.
           (4)Put(4)Put  thethe  potassiumpotassium  intointo  thethe  water.water.

  Result   TheThe  potassiumpotassium  burns.burns.
   Conclusio   PotassiumPotassium  reactsreacts  withwith  coldcold  water.water.
    n
              Sum up

• How can you do a scientific experiment 
 successfully?
First, we need to have an_____  aim  and prepare 
 _________apparatus  for the experiment before we do 
 the experiment.
Second, we must use correct________tomethods  do
 the experiment and watch carefully.
Then we can get the____andresult  draw a________.conclusion
     Homework
•Design a simple experiment
 about metal in groups of five
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