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1、P2Reading and VocabularyModule 5 A Lesson in a Labstage conclusionaim reactionelectrical equipmentreactpotassiumsodiumcalcium n. 阶段，时期阶段，时期 n. 结论结论 n. 目标，目的目标，目的 n. 反应反应adj. 与电有关的与电有关的;用电的用电的 n. 设备，装备设备，装备 vi. (化学化学)反应反应 n. 钾钾 n. 钠钠 n. 钙钙Words review magnesium aluminium zincpartial copperoxiderustbo
2、ilordinary n. 镁镁 n. 铝铝 n. 锌锌adj. 部分的，局部的部分的，局部的 n. 铜铜 n. 氧化物氧化物 vi. 生锈生锈 vt. 煮沸，煮煮沸，煮adj. 普通的；平常的普通的；平常的Words reviewObjectives1. To understand the two passages about scientific experiments2. To summarize and retell the main stages of the experiments3. To learn some useful words and expressions in th
3、e passage4. To learn to describe some other scientific experimentsP44 1Put these words in the correct order to describe the stages of a scientific experiment. conclusion aim result methodWhen we do an experiment, we should first of all have a/an _. We should use proper _. We should find out the _ an
4、d get a/an _.aimmethodsresultconclusionDo you know these four words? Do you know their meanings in a scientific experiment?AimMethodResult Apparatus/EquipmentConclusion+the elements of a simple scientific experimentbalance 天平天平crucible 坩埚坩埚tongs 钳子钳子test tube 试管试管test tube holder 试管夹试管夹 Bunsen burne
5、r 本生灯本生灯 cotton wool 脱脂棉脱脂棉VSgasliquidBunsen burnerAlcohol burner(alcohol)for general ideasPassage AChoose the best title for Passage A.A. The Different Uses of Metals B. The Reaction of Metals C. The Reaction of Metals with Oxygen P44 2for specific informationPassage A1. Which statement can we get
6、from the first paragraph?A. Metals are very rare in the world.B. Metals react with other substances.C. Metals are only used in cars.D. All the metals react with water.2. Which of the following about iron is trueaccording to the table?A. It cant react with water.B. It reacts quickly with oxygen.C. It
7、 reacts with steam.D. It is heavier than copper.Read Passage A and choose the best answers.Answer the following questions.1. Which of the metals in the table reacts the most with oxygen and water?2. What happens when you heat calcium in oxygen? 3. Which metals react with steam? 4. Does iron have a s
8、low or fast reaction with steam? 5. Does copper react with water?P44 3Now check the answers.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 s
9、team? 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 doesnt.for general ideasPassage BWhat experiment does Passage B show us ? A. How does the nail rust?B. How does iron react with air and with water
10、?C. How do we do an experiment about the reaction of iron? for specific informationPassage B1. Why should we add oil to the water in the experiment?A. To make the water clean.B. To protect the iron nails.C. To clean the tube.D. To keep air out of the water.2. We can learn from the experiment that _.
11、A. how iron rusts with oilB. iron is quite easy to rustC. how we can prevent iron from rustingD. iron rusts in air-free waterRead passage B and choose the best answers.Read Passage B and fill in the table. Iron in dry airIron in air-free waterIron in ordinary waterStage A(starting experiment)water w
12、ater Stage B(1 week later)Stage C (Result)cotton woolIron does not rust. Iron does not rust. Iron rusts. nailswater ConclusionIron rusts neither in dry air nor in air-free water, but in ordinary water.P44 41. In the first part of the experiment, the _ is dry, not wet.2. It shows that iron _ when the
13、 air is dry.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.5. It shows that _ does not rust in water that has no _ in it.airdoes not rustboilairComplete the sentences.P46 5some oilairnail air app
14、aratus (What to prepare?)How to describe an experiment?aim (Why?) conclusionresult (What can we find?)method (How to do it?)重难点句子分析重难点句子分析1. When we use metals, it is important to know how they react with different substances使用金属时，要了解金属和不同的物质如何使用金属时，要了解金属和不同的物质如何发生反应，这一点很重要。发生反应，这一点很重要。时间状语从句时间状语从句宾
15、语从句宾语从句形式主语形式主语动词不定式短语作真正主语动词不定式短语作真正主语it作形式主语，真正的主语为动词不定式。常见的作形式主语，真正的主语为动词不定式。常见的句型为：句型为：It + be + 形容词形容词 + (for / of sb.) + 动词不定式动词不定式.1. 拥有健康生活方式是很重要的。拥有健康生活方式是很重要的。 Its important to have a healthy life style.2. 认真记录对科学实验的描述是很重要的。认真记录对科学实验的描述是很重要的。 It is important to write down the description o
16、f the scientific experiment carefully.2. Here is a table with the metals that react most at the top, and the metals that react least at the bottom. 下列是一张金属反应表，列于顶部的金属反应下列是一张金属反应表，列于顶部的金属反应最剧烈，下部的则最缓慢。最剧烈，下部的则最缓慢。定语从句定语从句倒装是一种语法手段，常用来倒装是一种语法手段，常用来强调某一句子成强调某一句子成分分。例如：。例如：Seldom do I go to work by bus.
17、 我很少乘公共汽车上班。我很少乘公共汽车上班。 介词短语作定语介词短语作定语倒装还可用来倒装还可用来平衡句子结构平衡句子结构，避免出现头重脚，避免出现头重脚轻、结构不平衡的现象。例如：轻、结构不平衡的现象。例如：On the ground lay some air conditioners, which are to be shipped to some other cities. 地上放着一些空调地上放着一些空调,等着用船运到其他城市去。等着用船运到其他城市去。 1. 你盼望已久的信在这儿。你盼望已久的信在这儿。 Here is the letter you have been lookin
18、g forward to. 2. There goes the bell, announcing the end of the class. 下课铃响了。下课铃响了。activitiesHave you done any scientific experiments recently? Think about the stages of one of them and write an experiment report.TaskAn Experiment Report1. _:2. _:3. _: (1) (2) (3) 4. _:5. _:ResultConclusionAimAppara
19、tusMethodQuiz : Complete the passage with proper words, which will help you retell the text. It is hard to think of a world without metals. Different metals have different uses, for example, steel _ cars. It is important to know how metals _ different substances. From the table we can get the answer
20、 because the reaction of metals with these substances _.is put in order react with is used inScientific discoveries shape the way we view the world and influence our decisions.Science teaches people how to think critically.People use the methods and principles of scientific thinking in everyday life
21、.Science plays an important role in everyones life. How does it influence us?Learning science helps me to learn more about the world around me and makes me able to answer some questions. I become more confident now. So I want to say ！Now 2 mins to test our spelling.1. English-Chinese conclusion reac
22、tion electrical equipment partial ordinary2. Chinese-English 生锈生锈 煮煮; 煮沸煮沸 目标目标; 目的目的 漂浮漂浮 (化学化学)反应反应 形成形成 溶解溶解;分解分解;分离分离When finishing, exchange your papers to see who does the best.课时重点回顾课时重点回顾同同发生反应发生反应把把按顺序排列按顺序排列把某物加到其他物把某物加到其他物质中质中防止某物进入其他防止某物进入其他物质物质react with put in order add sth. to sth. else keep sth. out of sth. Homework1. Read the passage again and review the new words and expressions. 2. Read the articles in Learning English. The more you read, the faster and better youll understand. When finishing reading, write a summary in 100 words or so.
