四川省成都市高中英语 Module5 A lesson in a lab listening课件 外研版必修1.ppt

alessoninalab listeningandwriting basicequipmentinthelab testtube balance tongs crucible bunsenburner alcoholburner basicequipmentinthelab whatarethestagesofascientificexperiment aim method result conclusion apparatus companylogo aim apparatus method result conclusion anexperimentonmagnesiump47 tofindoutifthereisachangeinweightwhenthemetalmagnesiumburnsinair predict companylogo aim apparatus method result conclusion first put inthecrucible then put onthebalanceand it next themagnesium thebunsenburnerand it finally themagnesiumagain anexperimentonmagnesiump47 tofindoutifthereisachangeinweightwhenthemetalmagnesiumburnsinair itweighsalittlemore 1 5gramsmore thanbefore magnesium bunsenburner abalance acrucible first put inthecrucible then put onthebalanceand it next themagnesium thebunsenburnerand it finally themagnesiumagain anexperimentonmagnesiump47 tofindoutifthereisachangeinweightwhenthemetalmagnesiumburnsinair itweighsalittlemore 1 5gramsmore thanbefore thereisachangeinweightwhenmagnesiumburnsinair magnesium bunsenburner abalance acrucible themagnesium thecrucible weigh heat light holdthecrucibleover weigh wheredowegofromhere you vegotit goahead keepthenoisedown it syourturn tom youarenexttodotheclassreport youbegin please we realllistening iamveryhappyyou veunderstood mr white whatshallwedonextafterweighingthemagnesium talkquietly class don tinterruptothergroups it syourturn goahead you vegotit wheredowegofromhere keepthenoisedown everydayenglish wblisteningp95 aim equipment apparatus method stages 1234567result conclusion towritesecretmessagewithinvisibleink alemon asmallcontainer apen somewhitewritingpaper acandle somematches g a b f d c e squeezethelemon putjuiceintoacontainer writemessage drythejuice dipthepeninjuice lightacandle heatthepaper themessageappears juicereactswithoxygenintheairtoformbrownoxide howtodescribeascientificexperiment aim result apparatus method conclusion aim tofindout learn observe equipment apparatus method stages first th