What can you see?

I can see a lab in the picture.

What apparatus do we see in a lab?

Pre-reading Pre-reading –– 1. Brainstorming(2m) 1. Brainstorming(2m) What words can you think of when What words can you think of when looking at the picture? looking at the picture?

science scientificscience scientific

experiment apparatusexperiment apparatus

test tube tube holdertest tube tube holder

Bunsen burnerBunsen burner

balance

glass rod

beaker

Bunsen burner

Test tube

Test tube holder

坩埚 crucible

tongs

test tube tongs

test tube holder balance

Bunsen burner beaker

crucible glass rod

Do 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?

aim method result

conclusion

Passage A

Read 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 VocabularyReading and Vocabulary

• Look at the pictures. What are they? Do Look at the pictures. What are they? Do you know?you know?

Potassium

p1

钾 potassium

p2

Sodium

钠 sodium

Aluminium

铝 aluminium

Calcium

钙 calcium

Magnesium

镁 magnesium

Zinc

锌粒 zinc

Iron

铁 iron

铜 copper

铜 copper

Can you remember them?Please match A with B.

AMagnesium IronCalciumAluminiumCopperZincSodiumPotassium

BAlZnNaKFe Ca MgCu

1. Which of the metals in the table reacts the most with oxygen and water?

2. What happens when you heat calcium in oxygen?

Potassium, calcium and sodium

It 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 zinc

It has a slow reaction.

No, it doesn’t.

1. Which of the metals in the table reacts the most with oxygen and water?

2. What happens when you heat calcium in oxygen?

Potassium, calcium and sodium

It 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 zinc

It has a slow reaction.

No, it doesn’t.

Passage A Passage A –– 3. Fast 3. Fast Reading(2m)Reading(2m)

Read Passage A and choose the best Read Passage A and choose the best title for it.title for it.

The Different Uses of MetalsThe Different Uses of Metals

The Reaction of MetalsThe Reaction of Metals

The Reaction of Metals with OxygenThe Reaction of Metals with Oxygen

Passage A Passage A –– 4. Detailed 4. Detailed Reading(4m)Reading(4m)Qs:Qs:

1.1. What should we know when we use What should we know when we use metals?metals?

2.2. Which metal reacts most with water, Which metal reacts most with water, potassium or iron?potassium or iron?

It is important toIt is important to know how they react with know how they react withdifferent different susubstances. bstances.

Potassium Potassium reacts most withreacts most with water. water.

Passage A Passage A –– 4. Interview(4m) 4. Interview(4m) Work in groups of four. Work in groups of four. One is a reporter from a TV station. The others are One is a reporter from a TV station. The others are scientists. The interview should include the following scientists. The interview should include the following questions.questions.

1.Which metals 1.Which metals reacts the most withreacts the most with oxygen and oxygen and water?water?

2.What happens when you 2.What happens when you heat heat calcium in oxygen?calcium in oxygen?

3.Which meals reacts with steam?3.Which meals reacts with steam?

4.Does iron 4.Does iron have a slow or fast reaction withhave a slow or fast reaction with team? team?

5.Does copper react with water?5.Does copper react with water?

Potassium.Potassium.

It burns to form an oxide.It burns to form an oxide.

Magnesium, aluminium, zinc.Magnesium, aluminium, zinc.

Slow.Slow.

No, it doesn’t.No, it doesn’t.

Passage B Passage B –– 1.Pre-reading (1m) 1.Pre-reading (1m) Q: Can we put nails in wet air?Q: Can we put nails in wet air?

Passage B Passage B –– 2.Prediction 2.Prediction Put the words in Put the words in the right place of the experiment report.the right place of the experiment report.

An Experiment ReportAn Experiment Report1. __________:1. __________:2. __________:2. __________:3. __________:3. __________: (1)(1) (2)(2) (3)(3)4. __________:4. __________:5. __________:5. __________:

An Experiment ReportAn Experiment Report1. __________:1. __________:2. __________:2. __________:3. __________:3. __________: (1)(1) (2)(2) (3)(3)4. __________:4. __________:5. __________:5. __________:

conclusion conclusion

method method

result result

aim aim

apparatusapparatus

AimAim

ApparatusApparatus

MethodMethod

ResultResult

ConclusionConclusion

Passage B Passage B –– 3.Scanning(4m) 3.Scanning(4m) Right or wrong.Right or wrong.

1.1.Iron rusts easily in dry air.Iron rusts easily in dry air.

2.2.To make sure thereTo make sure there’’s no air in the water, s no air in the water,

you have to boil the water for 3 minutes.you have to boil the water for 3 minutes.

3.3.We donWe don’’t know whether iron rusts in t know whether iron rusts in

ordinary water.ordinary water.

FF

TT

FF

Passage B Passage B –– 4.Jigsaw reading(5m) 4.Jigsaw reading(5m) One group reads one experiment One group reads one experiment report. Then fill in the form below.report. Then fill in the form below.

Aim Aim

ApparatusApparatus

MethodMethod Iron in dry air:Iron in dry air:

Iron in air-free water:Iron in air-free water:

Iron in ordinary water:Iron in ordinary water:

ResultResult

ConclusionConclusion

To find out if...To find out if...

iron nails test tubes oil tube holdersiron nails test tubes oil tube holders cotton wool Bunsen burnercotton wool Bunsen burner

After a week, rustAfter a week, rust

( not ) rust in( not ) rust in

Passage B Passage B –– 5. 5. Using(3mUsing(3m) ) CompleteComplete the passage using what wethe passage using what we’’ve learnt in ve learnt in this lesson.this lesson.

In the first part of the experiment, the ____ In the first part of the experiment, the ____ is dry. It shows that iron ___________ in dry air.is dry. It shows that iron ___________ in dry air.

In the second part, you must _____ the In the second part, you must _____ the water to ______ _______ that there is no air in water to ______ _______ that there is no air in it. ________ some oil to the water can ______ it. ________ some oil to the water can ______ the air out of it. It shows that _____ donthe air out of it. It shows that _____ don’’t rust in t rust in ____________ water.____________ water.

In the third part, _______ the tube with In the third part, _______ the tube with water. It shows that they rust in _________ water. It shows that they rust in _________ water.water.

airair doesn’t rustdoesn’t rust

boilboilmake suremake sure

AddingAddingkeepkeep nailsnails

air-freeair-free

half-fillhalf-fillordinaryordinary

Pre-reading Pre-reading –– 3.Learning and sing(3m) 3.Learning and sing(3m) Complete the passage with proper Complete the passage with proper words.words. This is a _________ _________ done in a lab.This is a _________ _________ done in a lab.

First, get all the ____________ ready on the desFirst, get all the ____________ ready on the desk, a container(k, a container( 容器容器 ) with some cold water in it, s) with some cold water in it, some potassium(ome potassium( 钾钾 ) and a spoon.) and a spoon.

Secondly, ________ some potassium into thSecondly, ________ some potassium into the water. Then a strong light will be seen, and it lae water. Then a strong light will be seen, and it lasts for a while.sts for a while.

We can reach a __________ that potassium We can reach a __________ that potassium _______ with cold water._______ with cold water.

scientific experiment

apparatuses

pour

conclusion

reacts

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.

air

does not rust

3.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.

boil

air

oilair

5.it shows that __________ does not rust in water that has no _______in it

nail

air

summary1. We have known about some metals and their

reactions with some certain substances.

2. We have learned what needs to be paid attention to for an experiment.

3. We have studied some words about apparatus in a lab

4. We finish passage B

Activity 4: Reading (Passage B)Read the passage and complete the table.

cottonwool

nails

Iron does not rust.

water

Iron doesnot rust.

water

water

Iron rusts.