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1、Module5AlessoninaLabDoachemicalexperimentlabtesttube试 管实 验 室天平balancetesttubeholderRevision1.substance2.oxygen3.electricity4.electrical5.aim6.conclusion7.reactv.---n.8.equipment9.boil10.ordinary11.rust12.liquidWhentheironisheated(加热）itwillWhentheironiscooled(遇冷）itwillexpandcontractHowmuchdoyo
2、uknowaboutgeneralscience?Whenametalisheated,it_________(becomeslarger).Whenitcools,it_________(becomessmaller).liquidsubstanceoxygenelectricitymixtureoxiderustaimconclusionstageexpandcontractboilreactequipmentbalanceordinarypartialexpandscontractsStudythetableandtrytofindouthowtoreadfractions
3、.wewriteweread11/221/332/341/453/461/678/11one-thirdtwo-thirdsone-sixtheight-eleventhsahalf/one-secondaquarter/one-fourththreequarters/threefourthsWorkingroupstofindouthowtoreaddecimals.0.118.273.7980.378(zero)pointoneeighteenpointtwoseventhreepointsevennineeight(zero)pointthreeseveneightHowm
4、uchmoneydoyouhave?1,000,000,000billion10亿million百万thousand千Canyoureadthem?100百1281,000千10,000万100,0001,000,00010,000,000100,000,000亿1,000,000,000a/onehundreda/onebilliona/onehundredmilliontenmilliona/onemillionahundredthousandtenthousanda/onethousandonehundredandtwenty-eightsixmillioneighthun
5、dredandsixty-fivethousandtwobillionsixhundredandseventy-fourmillion,andfifty-seventhousand6,865,0002,674,057,0004.DecimalsFractionsDecimalsWesay1/221/43/4301/2123/1012.330.50.752.250.5pointfive(zeropointfive)twopointtwofivepointsevenfivethirtypointfivetwelvepointthreeListentothetapecarefullya
6、ndchoosethebesttitleforit.TheDifferentUsesofMetalsTheReactionofMetalsTheReactionofMetalswithOxygenPassageAReadpassageAcarefullyandanswer:1.Whathappenswhenyouheatcalciuminoxygen?2.Whichmetalsreactwithsteam?3.Doescopperreactwithwater?Itburnstoformanoxide.Magnesium,aluminiumandzinc.No,itdoesn’t.
7、ASimpleChemicalExperimentPassageBWhenwedoanexperiment,weshouldfirstofallhavean_____.Weshoulduseproper(合适的)_________.Weshouldfindoutthe_______andgetan____________.Putthesewordsinthecorrectordertodescribethestagesofachemicalexperiment.conclusio
