外研版 高一年级 ( 必修 1)

Module 5

Reading Reading

BBB. aim

D. method

A.result

C. conclusion

DD AA CC

The steps of a scientific The steps of a scientific

experimentexperiment

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 A

The Reaction of MetalsThe Reaction of Metals

Aim:

Apparatus:

Methods:

Result:

Conclusion:

How different metals react with

water and oxygen.

(1) Heated in oxygen (1) Heated in oxygen

(2) put into water or steam(2) put into water or steam

Metals Heated in oxygenReaction with water or

steam

Potassium

Burn to form an oxide

Reacting with cold water

Sodium

Calcium

Magnesium

Reacting with steamAluminium

Zinc

Iron Reacts slowly Partial reaction

Copper Partial reaction No reaction

The Reaction of Metals

1. It is easy to do experiments in a lab

在实验室里做实验很容易。2. It is not so difficult to study English

well. 学好英语并不难。3. Your books are out of order, you should

put them in order.

你的书太乱了 , 你应该把它们按顺序放好。4. Your name is at the top of the list.

你的名字在名单的最前面。

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, calcium and sodium.

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 reaction.

5. Does copper react with water?

No, it doesn’t.

Complete the passage with proper words

according to passage A.

Metals 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

Read the passage and fill in the chart.

Passage B

Iron in dry air

Iron in air-free water

Iron in ordinary water

Stage A(starting experiment)

cotton wool water water

Stage B(1 week later)

Stage C (Result)

nailswater

Iron does not rust

Iron does not rust

Iron rusts

1.In the first part of the experiment, the _

__ is dry, not wet.

2. It shows that iron ___________ when t

he air is dry.

3. In the second part of the experiment, y

ou must ____ the water to make sure t

here is no ____ in it.

air

does not rust

boilair

Read the passage again and complete the

sentences.

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.

some oil

air

nail

air

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

electrical

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 let’s do an

__________ to support the above. 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

1. When we use metals, it is important to

know how they react with different

substances, for example, water and

oxygen.

= When we use metals, we should know

how metals react with different

substances, for example, water and

oxygen, which is very important.

本句是一个复合句，其中 when 引导时间状语从句；在主句中， it 为形式主语，真正的主语是动词不定式短语 to

know ... substances ，其中 how ...

substances 为 how 引导的宾语从句，作know 的宾语， for example 引出同位语，表示举例。

2. Here is a table with the metals that

react most at the top, and the metals

that react least at the bottom.

= A table is here. At the top of the table

we can see the metals that react most

and at the bottom of the table we can

see metals that react least.

本句使用了倒装语序。句子的主语是 a

table ，后面的 with ... bottom 作定语修饰 a table ；两个 that 都引导定语从句修饰 the metals 。句意 : 这里有一个表格，反应最强烈的金属在最上面 , 反应最弱的在最下面。

Read about an incident during a

chemistry lesson and choose the

best summary.

Reading on P93

1. A student didn’t follow the

instructions carefully. He took the

wrong liquid from the cupboard and

nearly poisoned the class.

2.The chemistry teacher was

demonstrating an experiment when

she heated a poisonous liquid. There

was so much smoke that the students

had to leave the room.

3. A student was doing a chemistry

experiment when he accidentally

heated the wrong liquid and

caused an incident in the

laboratory.

Read the passage again and answer

the questions:

1. What substances were they using?

Baking soda and hydrochloric acid.

2. What substances were the students

making?

Salt.

3. How can they make the reaction

quicker?

By making the mixture hotter.

4. What mistakes did Paul make?

He used the wrong liquid.

5. Why did he make the mistake?

Because there was no label on the bot

tle.

6. What happened when Paul heated th

e liquid?

It formed a thick cloud of white gas.

7. Why did the teacher send the students

out of the room?

Because the liquid was acrylamide an

d the gas was poisonous.

8. What lesson did the incident teach the

students and the teacher?

Never to leave a bottle without a label

in the chemistry lab.

1. Learn the new words by heart.

2. Read Passage A and B and try

to retell it.