1、1.What color does the liquid turn when it is poured into a cup?Green Chemistry lab 22.Where does this experiment happen?1.Three quarters of the water (drink)by the dog.2.One third of the population in this city (be)workersis drunkare4,444,444four million,four hundred and forty-four thousand,four hun
2、dred and forty-four1/43/8eighty-three point three threethirty-seven point five percenta quarter/a fourththree eighths83.3337.5%P43 2.Winter is four times colder in Harbin than in Beijing.(as cold in Harbin as in Beijing)3.Mount Qumolangma is about six times as high as4.MY aunts house is twice larger
3、 than5.Tom weighs over twice as heavy asMagnesiumPotassiumSodiumAluminiumCalciumZincIronCopperTest tubeTest tube holderBunsen burner1.Listen to the tape and guess the best title.2.Fast reading:Read the passage quickly and find the topic sentenceand choose the best title 1)The topic sentence is:_ _ _
4、 _ 2)The best title is _.Passage AWhen we use metals,it is important to know how they react with different substances,for example,water and oxygenThe Reaction of MetalsThe topic sentence is the main sentence of a paragraph,which describes its content and direction.Passage ATable reading:1.Potassium,
5、calcium and sodium.2.It burns to form an oxide.3.Magnesium,aluminium and zinc.4.It has a slow reaction.5.No,it doesnt.Tips:Remember how to answer a question correctly,sometimes you use a noun or noun phrase,Sometimes you have to use a sentence.The correct order to describe the stages of a scientific
6、 experiment should be:AimconclusionresultmethodAim Method ResultConclusion To find out if iron rusts in dry air.In this part,the air is _,not wet.After one week,the nails_Iron _in _air.To find out if iron rusts in water that has no air in it.1)In this part,you must_ the water to make sure there is n
7、o _in it.2)You add _ to the water to keep_out of it.The nails _ _Iron _in _ water.To find out if iron rusts in ordinary water.The water in thetest tube is_The nails _.Iron _in _ water.Cottonwoolwaterwaterdryboilairoilairhavent rusteddont rustrustdoesnt rustdrydoesnt rustair-freerustordinaryordinary
8、Passage BThe structure of an experiment report Passage BSHOW TIME How to describe a scientific experiment.AimThe aim of the experiment is to find out-ApparatusThe apparatus I use/need in the experiment are-MethodFirst,I-,then,I-next-ResultI find that the nails-conclusionSo we can reach a conclusion that iron-Writing practice:According to Passage B,fill in the report and write a description of your experiment An Experiment reportAimApparatusesMethodResultConclusion1.Write an experiment report and a description of the experiment on your exercise book.2.Finish the exercises in Step 4&5
