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高11-12学年高一英语必修1课件:Module 5 A lesson in a Lab Reading(外研版必修1)


Module 5
A Lesson in a Lab
Reading and Vocabulary

胡维芳

new words



potassium

夏季出汗需多补钾

香蕉富含有钾

sodium

copper(铜) magnesium

aluminium(铝)

Iron (铁) zinc(锌) calcium(钙)

potassium sodium

calcium

magnesium

aluminium

zinc

iron

copper

What was it made of ?

It is h t think of a world w m . Different metals have d uses, f e , steel is u in cars, and iron is used in e equipment. When we use metals, it is important to know how they r with different s , for example, water and o . The r of metals with these substances can be p i o . Here is a table with the metals that react most at the t , and the metals that react least at the bottom.

Metal Potassium Sodium Calcium Magnesium Aluminum Zine Iron Copper

Heated in oxygen

Reaction with water and steam

Reacting with cold water
Burns to form an oxide* Reacting with steam Reacts slowly Partial reaction Partial reaction No reaction

an oxide*=another substance + oxygen

? 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?

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

Magnesium,Aluminium and zinc.
It has a slow reaction.

? 5.Does copper react with water? No, it doesn't.

1.It is hard to think of a world without metals. 2.Different metals have different uses, for example, steel is used in cars, and iron is used in electrical equipment. 3.When we use metals, it is important to know how they react with different substances, for example, water and oxygen. 4.The reaction of metals with these substances can be put in order. 5.Here is a table with the metals that react most at the top, and the metals that react least at the bottom.

1.It is hard to think of a world without metals.
很难想象一个没有金属的世界。

It is/was +adj.+ for sb.+ to do sth. It 为形式主语,真正的 主语是动词不定式短语 to think of.
eg. 爬那座小山是容易的。

It’s easy to climb the hill.
(2010,全国大纲卷II,14)The doctor thought good for you to have a holiday. A. this B. that C. one D would be

D. it

2.Different metals have different uses, for example, steel is used in cars, and iron is used in electrical equipment.
不同的金属有不同的用途,比如,钢用来造车,铁用来造电力设备。

for example , such as , that is 比如 electrical adj. electricity n. equipment (uncountable noun ) equip V.

3.When we use metals, it is important to know how they react with different substances, for example, water and oxygen.
使用金属时,要了解金属和不同物质(例如水和氧气)如何发生反应,这一点很 重要。

When引导时间状语从句。 It is/was +adj. + for sb. to do sth. react v. react to ….对…有反应 eg. Plants react to light.
react with ….同…反应 react against sb./sth. ….反对某人/某物

reaction n. reactive adj.

4.The reaction of metals with these substances can be put in order.
(不同的)金属与这些物质的反应程度可以按顺序排列起来。

put sth. in order
把某物按顺序排列 in order out of order 有序的(地); 无序的(地). eg. Lily, put your things in order after you play with them.

order v. 命令
order sb. to do sth. eg. The leader ordered us to arrive at the park at six o’clock

5.Here is a table with the metals that react most at the top, and the metals that react least at the bottom.
下面是一张金属反应表,列于顶部的金属反应最剧烈,下面的则最缓慢。

It is hard to think of a world without metals . Different metals have different uses, for example , steel is used in cars, and iron is used in electrical equipment. When we use metals, it is important to know how they react with different substances, for example, water and oxygen . The reaction of metals with these substances can be put in order . Here is a table with the metals that react most at the top , and the metals that react least at the bottom.

After learning Passage A Do you think it is scientific to make Goujian Sword by using copper

Decide whether these statements are true or false according to Passage A .
? 1.Different metals have different uses. T ? 2.The reaction of metals with different F substances is the same. ? 3.Magnesium can form an oxide when heated in oxygen. T ? 4.Iron reacts with cold water. F ? 5.Copper reacts most when heated in oxygen. F

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


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