history of the atom原子的历史

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1、HistoryoftheAtomIntroductionAllmatterismadeoftinyparticlescalledatoms.Theseatomsaresosmallthat,inordertobegintoseetheatomsthatmakeupadropofwater—wewouldhavetoblowituptoasizeof15milesacross!Theseatomsareinturnmadeofevensmallerparticlescalledprotons,neutronandelectrons.Everythingthatmatterisand

2、everythingthatmatterdoescanbeexplainedbythebehaviorofatoms!Howhavescientistscometounderstandtheseparticleswecannotsee?Howhasthisunderstandingchangedandevolvedovertime?Andwhatremainstobediscovered?Inaway,thescientistswhohaveunraveledthepropertiesoftheatomhavebeenlikedetectivessolvingpartsofamy

3、stery—withnewmysteriesarisingoutofeverydiscovery.YourTaskYouwillworkasagroupofoneortwotoresearchthescientistsandexperimentsthathaveleadtoourcurrentunderstandingoftheatomanditsproperties.Youwillworkinyourgrouptofindinformationonatleast5scientists.Yourgroupwillresearch,andreporton,thefollowing-

4、A.Biography:Whendidthisscientistlive?Whatwashisorhereducationandbackground?Howdidtheviewsofthescientificcommunityinfluencetheirviewsandwork?B.Discovery:Whatdiscoveryisthisscientistnotedfor?Thompson,RuthefordandMillikanareeachnotedforalandmarkexperiment—whatwasitandwhatdiditprove?C.Timeline:Ho

5、wdidthisdiscoverychangeourviewoftheatomoritsproperties?Howdiditinfluencefutureresearch?Eachgroupwillpreparea1–2pagepaperandwillpresentoneoftheirscientiststotheclasswiththeresultsoftheirresearch.Youmayuseposters,demonstrationsoranyothervisualyouchoose.Presentationsshouldbebetweentwo–fiveminute

6、s,andnolongerthanfiveminutes.Eachgroupwillprepareasinglepostertocontributetoaclasstimelineofthediscoveryoftheatom.Eachposterinthetimelinewillnotethedateorperiodofthediscovery,themajorcharacterandtheadvancementinourunderstandingoftheatomthatisassociatedwithyour5scientists.Finally,eachgroupwill

7、prepareareportoftheirresearchonthebiography,discoveryandtimelineoftheirtopic.Justhitthemajorpoints!Thistaskmaybedividedbetweengroupmembers—butyoumustmakethefinalproductlooklikeasinglereport—notacutandpasteoftworeports.Anoteonsources:Allsource