外研社 英语必修1 Module 5 A Lesson in a Lab Reading课件(共15张ppt)

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名称 外研社 英语必修1 Module 5 A Lesson in a Lab Reading课件(共15张ppt)
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科目 英语
更新时间 2020-01-11 20:55:10

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课件14张PPT。 Book 1 Module 5
A Lesson in a Lab
Period 1 Reading
Learning AimsWhat are they doing?They are doing a chemical experiment.acidCan you guess what is happening to the metals during this experiment?Reaction Passage AWhat’s the best title of this passage?The Reaction of Metals Read Passage A and find the following information
1. The metal which reacts the most with oxygen
and water is____________.
2. The metals which react with steam are
_____________________________.
3. The metal which reacts with steam slowly
is _________.
4. The metal which doesn’t react with water or
steam is_________.Potassium Magnesium, Aluminum , ZinkIronCopper Passage BWhat will happen when we put nails in wet air? RustBasic structure of an experiment reportStructureAimApparatusMethodResultConclusionRead Passage B and finish the tableTo find out if iron rusts in…nails; test tubes; wool; oil; Bunsen burnerPut…at…
Push…
Leave…Half-fill…
Boil…
Put…
Add…to…
Leave…Half-fill…
Leave…not rustnot rustrustIron doesn’t rust in dry air or air-free water, but rusts in ordinary water.Describe an experiment How to write a secret message with invisible ink?Task 1, Describe each stage of the experiment with a verbal phrase
Task 2, Describe the process of this experiment with expressions of sequence_________ a lemon____ pen in juice________ a message_____ the paper_____a candle____ the papermessage _______________ a lemon____ pen in juice________ a message_________ a lemon____ pen in juice_____ the paper________ a message____ pen in juice_____a candle_____ the paper________ a message____ pen in juice____ the paper_____a candle_____ the paper________ a message____ pen in juicemessage __________ the paper_____a candle_____ the paper________ a message____ pen in juicesqueezedipwriteblowlightheatappears Outline of description The aim of this experiment is to write a secret message with the lemon juice as invisible ink.
For the experiment, you need….
First,… Then,…
Next,… After that,…
Finally,…
The message will … because the lemon juice reacts with oxygen in the air.For the experiment, you need a lemon, a container, a pen, a piece of paper, a candle and a match.
First, squeeze the lemon.
Then, dip your pen in juice .
Next, write your message on a piece of paper.
After that, blow on the paper to dry it.
Finally, light a candle with a match and heat the paper.
The message will gradually appear on the paper.DiscussionWhat qualities do you think we should have when we perform an experiment?HomeworkBelow are two interesting experiments in life. Choose one that interests you most, make it and write an experiment report including aim, apparatus, method, result and conclusion.Experiment 1
Remove the shell from an egg without breaking the egg by using vinegar
Experiment 2
Make soda water(汽水) by yourself with the lemon and sugar