Module 5 A Lesson in a Lab reading and vocabulary

课件51张PPT。Module 5
A lesson in a labReadingWhat can you see?I can see a lab in the picture.What apparatus do we see in a lab?Pre-reading – 1. Brainstorming(2m) What words can you think of when looking at the picture? science scientific
experiment apparatus
test tube tube holder
Bunsen burnerbalanceglass rodbeakerBunsen burnerTest tubeTest tube holder坩埚 crucibletongstest tube tongs
test tube holder balance
Bunsen burner beaker
crucible glass rodDo you know how we can carry out an experiment successfully?It’s interesting to do an experiment. But we’ve got a lot of things to do before an experiment. First, we should be clear the aim of the experiment, the apparatus we need and how we can carry it out (we call it “method”).We watch what’s happening and get the result. Lastly it is important to have a discussion on the result of the experiment. Don’t forget to write down the conclusion.What is the correct order to describe a scientific experiment?aimmethodresultconclusionPassage ARead through passage A in three minutes.electrical adj. 用电的，与电有关的
electricity n.电
equipment n.设备，装备
react vi. （化学）反应
reaction n. 反应
oxide n.氧化物
Steam n. 蒸汽， 水气Reading and VocabularyLook at the pictures. What are they? Do you know?
Potassiump1钾 potassiump2Sodium钠 sodium Aluminium铝 aluminiumCalcium钙 calciumMagnesium镁 magnesiumZinc锌粒 zincIron铁 iron铜 copper铜 copperCan you remember them?Please match A with B.A
Magnesium
Iron
Calcium
Aluminium
Copper
Zinc
Sodium
Potassium
B
Al
Zn
Na
K
Fe
Ca
Mg
CuWhich of the metals in the table reacts the most with oxygen and water?
What happens when you heat calcium in oxygen?
Potassium, calcium and sodiumIt burns to form an oxide.3. Which metals react with steam?
4. Does iron have a slow or fast reaction with steam?
5. Does copper react with water?
Magnesium, aluminium and zincIt has a slow reaction.No, it doesn’t.Which of the metals in the table reacts the most with oxygen and water?
What happens when you heat calcium in oxygen?
Potassium, calcium and sodiumIt burns to form an oxide.3. Which metals react with steam?
4. Does iron have a slow or fast reaction with steam?
5. Does copper react with water?
Magnesium, aluminium and zincIt has a slow reaction.No, it doesn’t.Passage A – 3. Fast Reading(2m)Read Passage A and choose the best title for it. The Different Uses of Metals
The Reaction of Metals
The Reaction of Metals with OxygenPassage A – 4. Detailed Reading(4m)Qs:
What should we know when we use metals?
Which metal reacts most with water, potassium or iron?
It is important to know how they react with
different substances. Potassium reacts most with water.Passage A – 4. Interview(4m) Work in groups of four. One is a reporter from a TV station. The others are scientists. The interview should include the following questions.1.Which metals reacts the most with oxygen and water?
2.What happens when you heat calcium in oxygen?
3.Which meals reacts with steam?
4.Does iron have a slow or fast reaction with team?
5.Does copper react with water?
Potassium.It burns to form an oxide.Magnesium, aluminium, zinc.Slow.No, it doesn’t.Passage B – 1.Pre-reading (1m) Q: Can we put nails in wet air?Passage B – 2.Prediction Put the words in the right place of the experiment report. An Experiment Report
1. __________:
2. __________:
3. __________:
(1)
(2)
(3)
4. __________:
5. __________:conclusion method result
aim apparatusAimApparatusMethodResultConclusionPassage B – 3.Scanning(4m) Right or wrong.
Iron rusts easily in dry air.
To make sure there’s no air in the water, you have to boil the water for 3 minutes.
We don’t know whether iron rusts in ordinary water.
FTFPassage B – 4.Jigsaw reading(5m) One group reads one experiment report. Then fill in the form below.To find out if... iron nails test tubes oil tube holders
cotton wool Bunsen burnerAfter a week, rust( not ) rust inPassage B – 5. Using(3m) Complete the passage using what we’ve learnt in this lesson. 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 ______ _______ that there is no air in it. ________ some oil to the water can ______ the air out of it. It shows that _____ don’t rust in ____________ water.
In the third part, _______ the tube with water. It shows that they rust in _________ water.airdoesn’t rustboilmake sureAddingkeepnailsair-freehalf-fillordinaryPre-reading – 3.Learning and sing(3m) Complete the passage with proper words. 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 water.scientific experimentapparatusespourconclusionreactsComplete 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 ________ in it.
4.You add ________ to the water because this keeps _________out of it.
boilairoilair5.it shows that __________ does not rust in water that has no _______in it
nailair summary
We have known about some metals and their reactions with some certain substances.
We have learned what needs to be paid attention to for an experiment.
We have studied some words about apparatus in a lab
We finish passage B Activity 4: Reading (Passage B)
Read the passage and complete the table.cotton
woolnailsIron does
not rust.waterIron does
not rust.waterwaterIron rusts.See you!