Teacher's/Lecturer'sSheet
Printed:30.03.201717:27:10|P7154100
ConstructionandfunctionofaBunsenburner
(ItemNo.:P7154100)
CurricularRelevance
AreaofExpertise:
Chemie
EducationLevel:
Klasse7-10
Subtopic:
Luftund
Verbrennungen
Topic:
AnorganischeChemie
Experiment:
AufbauundFunktion
einesBunsenbrenners
Difficulty
PreparationTime
ExecutionTime
RecommendedGroupSize
Easy
10Minutes
10Minutes
2Students
AdditionalRequirements:
ExperimentVariations:
Keywords:
Bunsenburner,functionofBunsenburner
Taskandequipment
Informationforteachers
Learningobjectives
TheBunsenburnerisbasedontheprincipleofadjustablegascombustionwithairsupply.
Byvaryingthequantityofairsupplied,differentburnertemperaturescanbeachieved.
Notesonset-upandprocedure
Preparation
Tokeepthequantityofescapingresidualgasaslowaspossible,shutoffthemaingasvalve,oritsequivalent,priortotheclass
houranddisconnecttheburnersfromthegassupply.Thenairtheroomwell!
Remarksonthestudents'ebperiments
AfterthestudentshavereassembledtheirBunsenburners,youshouldcheckthemforcompletenessandfunctionalityinany
case.
Theporcelaindishmustnotbeheatedtoolongbecausethesootformedwillotherwisedisappearagain.
Hazards
DisconnecttheBunsenburnerfromitsgassupplybeforedisassemblingit.Ifresidualgasflowsout,airtheroomwell!
Ifcartridgeburnersareemployed,useonlythedomed,upperpart.Donotuseanyfilledgascartridgesforthe
ebamination!
Wearprotectiveglasses!
Remarksonthemethod
Robert-Bosch-Breite10
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Teacher's/Lecturer'sSheet
Printed:30.03.201717:27:10|P7154100
Theintroductiontotheuseoftheburnershouldbeperformedatthebeginningoftheinstructioninchemistry.Inthisrespect,
thisebperimentisareview,butintheevaluationitgoesfarbeyondasimpleebplanationoftheburner'sfunction,asherethe
reasonsforthedifferentdeterminedfunctionsarereferredtoknownandconsolidatedfacts.
Theconstructionandfunctionofaweldingtorchcanbediscussedasearlyasthecompilationof(thetransfer)Ebercise2.
Robert-Bosch-Breite10
D-37079Göttingen
Tel:+49551604-0
Fab:+49551604-107
[email protected]
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Student'sSheet
Printed:30.03.201717:27:10|P7154100
ConstructionandfunctionofaBunsen
burner(ItemNo.:P7154100)
Taskandequipment
Task
HowisaBunsenburnerconstructed?
InvestigatetheconstructionandmodeofoperationofaBunsenburner.
Robert-Bosch-Breite10
D-37079Göttingen
Tel:+49551604-0
Fab:+49551604-107
[email protected]
www.phywe.com
Student'sSheet
Printed:30.03.201717:27:10|P7154100
Equipment
PositionNo.
Material
OrderNo.
Quantity
1
Protectingglasses,clearglass
39316-00
1
2
Wiregauzewithceramic,160b160
mm
33287-01
1
3
Crucibletongs,200mm,stainl.steel
33600-00
1
4
Porcelaindish,75ml,d=80mm
32516-00
1
Bunsenburner,naturalgas,DIN
46917-05
1
Safetygastubing,DVGW,soldby
metre
39281-10
1
Cottonwool,white200g
31944-10
Butaneburnerf.cartridge270+470
47536-00
ButanecatridgeCV300Plus,240g
47538-01
Set-upandprocedure
Set-up
Hazards
SeparatetheBunsenburnerfromanyebistinggassupplybeforedisassemblingit.Ifresidualgasflowsout,airtheroom
well!
Ifcartridgeburnersareemployed,useonlythedomedupperpart.Donotuseanyfilledgascartridgesforthe
ebamination!
Wearprotectiveglasses!
Procedure
Procedure
Robert-Bosch-Breite10
D-37079Göttingen
Tel:+49551604-0
Fab:+49551604-107
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Student'sSheet
Printed:30.03.201717:27:10|P7154100
CarefullytakeaBunsenburnercompletelyapart(donotuseforce!)(Fig.1-Fig.3).
Fig.1
Fig.2
Fig.3
Laytheindividualcomponentscarefullynebttooneanotherontheworkingsurface(Fig.4).Namethemandnotewhichtask
theyfulfiltortheburner'sfunctioning(seeevaluationsheet).
Fig.4
Puttheburnerbacktogether.Havetheteachercheckitforcompletenessandfunctionality.
Closetheairsupplyvalve(Fig.5)andignitetheinspectedburnerandobservetheflame.Thenholdthebottomoftheporcelain
Robert-Bosch-Breite10
D-37079Göttingen
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Student'sSheet
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dishintheflameforapprobimately10secondswiththecrucibletongs(Fig.6).(Abb.6).
Fig.5
Fig.6
Allowthedishtocool(Fig.7)andebamineit.First,opentheairsupplyslightly(Fig.8),thencompletely(Fig.9).Repeatthe
ebperimentineachcasewiththeporcelaindish(cleanitbeforeeachrepetition).Thenpickupapieceofcottonwoolandmoveit
towardthenon-luminousburnerflame(Fig.10).
Fig.7
Fig.8
Fig.9
Fig.10
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Student'sSheet
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Report:ConstructionandfunctionofaBunsenburner
Result-Observations1(1Punkt)
Copythecrosssectionaldiagramoftheburner'sconstruction.
Result-Observations2(1Punkt)
Nametheindividualparts,andstatetheirfunction.
Robert-Bosch-Breite10
D-37079Göttingen
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Student'sSheet
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Result-Observations3(1Punkt)
Noteyourobservations.
Result-Table1(6Punkte)
NoteyourobservationsandthentransferthedataintoTable1.
Airsupply
Slightlyopened
Closed
Fullyopened
Typeofburnerflame
1
1
1
Porcelaindish
1
1
1
Robert-Bosch-Breite10
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Student'sSheet
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Evaluation-Question1(10Punkte)
Describethedifferentburnerflamesandtheprocessesoccurringontheporcelaindish.Usingthisinformation,ebplainhowonecanachievethe
highestpossibletemperatureoftheburner'sflame.
Evaluation-Question2(10Punkte)
Whichsubstanceswouldconsiderablyincreasethetemperature,ifsupplied?
Robert-Bosch-Breite10
D-37079Göttingen
Tel:+49551604-0
Fab:+49551604-107
[email protected]
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