VPL_Lab23.doc - VP Name Samantha Oncher Date Class:PHY/101...

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Chapter 11 / Exercise 12
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VPName: Samantha OncherDate:12/06/2015Class:PHY/101Lab23:PhaseChangesPurposeTostudythephasechangesaswaterisheatedfromsolidtoliquidtowatervaporBackgroundDependingonthetemperature,mostsubstancescanexistaseitherasolidoraliquid.Asubstanceinitsliquidstatehasmorethermalenergythanithasinitssolidstate.Thetemperatureatwhichthetransitionfromasolidtoaliquidtakesplaceiscalledthemeltingpointofthesubstance.Themoleculesthatmakeupagashavemorethermalenergythandomoleculesofthesamesubstanceintheliquidstate.Theliquid’smoleculesareinclosecontactwitheachotherwhilegasparticlesarespacedsignificantlyfurtherapart.Thetransitionfromaliquidtoagasisknownasvaporizationandoccursbyeitherevaporationorboiling.Thenormalboilingpointisthetemperatureatwhichthesubstanceboilsatsealevel.Meltingandvaporizationpointsarecharacteristicpropertiesofasubstance.Chemistsoftenusethesepointstohelpidentifyorclassifyasubstance.SkillsFocusGraphing,interpretingdata,applyingconcepts,drawingconclusions,relatingcauseandeffect,makingjudgmentsProcedure1.StartVirtualPhysicsandselectPhaseChangesfromthelistofassignments.ThelabwillopenintheCalorimetrylaboratory.2.Theexperimentwillbesetupwithacoffeecupcalorimeterfilledwith65mLofroomtemperaturewateronthelabbench.Thereisabeakeronthetablenexttothebalance.ClickonthebalanceareaandthendragthebeakertothebalanceandclickontheTarebuttontozerooutthebalance.DragthebeakerbacktothespotlightonthetableandclickZoomOut.Clickonthegreenicebucket
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Process Technology Troubleshooting
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Chapter 11 / Exercise 12
Process Technology Troubleshooting
Thomas
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