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1、制氢(hydrogenproduction)Lessonplan:preparationandpropertiesofhydrogenTeachingobjectiveKnowledgegoalToenablestudentstomasterthelaboratoryofhydrogenchemicalreactionprinciple,preparationmethodsandpropertiesforpreparation.Accordingtothepropertiesofgas,thegascollectionmethodtojudge.AbilitytargetB
2、yobservingandunderstandingtheworkingprincipleofthegenerator,thesimpledeviceforpreparinghydrogenisdesignedaccordingtoitsprincipleandthesimpleexperimentalinstrumentwhichiseasytoobtainandcheap.EmotionalgoalPaycloseattentiontotheExpo,understandtheExpo--bettercitybetterlife,advocatinglow-carbon
3、life.Throughtheexaminationofthepurityofhydrogen,itisnecessaryforstudentstounderstandthenecessityofcheckingbeforeburningflammablegas,andstrengthenthesafetyeducationforstudents.TeachingemphasisAtypicalexperimentdevicetoknow"solid+liquid"producinggasMasterthegenerator(includingsimplegenerator
4、)workingprincipleThroughtheexperiment,masterthewayofpreparationandpropertiesofhydrogenTeachingsteps,teacheractivities,studentactivitiesIntroduce[news]ExpoParkoffersnewenergyvehiclestoachievezeroemissionsbyhydrogendrive.[development]understandinghydrogenfuelvehiclesHydrogenfuelvehicleswithh
5、ydrogenasthemainenergyis:asamobilevehicle.Therearemanyadvantagesofusinghydrogenasfuel.Thebiggestadvantageisthatitiscleanandhygienic.Theproductofhydrogencombustioniswater,anditwillnotpollutetheenvironment.Hydrogenfuelcanbeputintouse,tosolvetheproblemofsafestorageandtransportationofhydrogeni
6、samajorproblem.Therearetwoconventionalmethodsofhydrogenstorage.Onewayistostorehydrogenwithhighpressurecylinders,butthevolumeofhydrogenstoredinthecylindersissmall,andthereisariskofexplosion.Anotherwayistostoreliquidhydrogen,butbecausethedensityofhydrogenisverylow,theliquidstoragetankisveryl
7、argeandneedsexcellentinsulationtoheatit.Inrecentyears,anewandsimplemethodofhydrogenstoragehasemerged,thatis,hydrogenstoragealloys(metalhydrides)areusedtostorehydrogen.Researchshowsthatundercertaintemperatureandpressureconditions,somemetalcanabsorbhydrogen.[rev