ReadingandvocabularyReadthepassageasquicklyasyoucanandchoosethebesttitleforit.TheDifferentUsesofMetalsTheReactionofMetalsTheReactionofMetalswithOxygenPassageAWecanreachaconclusionthatitisimportantforustoreadbooks.Itisouraimtobuildupaharmonioussociety.Itisapieceofelectricalequipment.ThestonecontainspotassiumsodiumcalciummagnesiumThewheelismadeofaluminum.zincoxideNailsareeasytorustinthedampair.Waterboilsat100°C.conclusionaimelectricalpotassiumsodiumcalciummagnesiumaluminumzinccopperoxiderustboilsReadthepassageagainandanswerthefollowingquestions:1.Whichofthemetalsinthetablereactsthemostwithoxygenandwater?Potassium,calciumandsodium.2.Whathappenswhenyouheatcalciuminoxygen?Itburnstoformanoxide.3.Whichmetalsreactwithsteam?Magnesium,aluminiumandzinc.4.Doesironhaveasloworfastreactionwithsteam?Ithasaslowreaction.5.Doescopperreactwithwater?No,itdoesn’t.Readthepassageandfillinthechart.IronindryairIroninair-freewaterIroninordinarywaterStageA(startingexperiment)cottonwoolwaterwaterPassageBStageB(1weeklater)StageC(Result)nailswaterIrondoesnotrustIrondoesnotrustIronrustsReadthepassageagainandcompletethesentences.1.Inthefirstpartoftheexperiment,the___isdry,notwet.2.Itshowsthatiron__________whentheairisdry.airdoesnotrust3.Inthesecondpartoftheexperiment,youmust____thewatertomakesurethereisno____init.4.Youadd_________tothewaterbecausethiskeeps____outofit.5.Itshowsthat____doesnotrustinwaterthathasno____init.boilairsomeoilairnailairHomework1.Learnthenewwordsandimportantsentencesbyheart.2.ReadPassageAandBandtrytoretellit.
