calorimetrylabse

8/13/2019 CalorimetryLabSE

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Name: ______________________________________ Date: ________________________

Student Exploration: Calorimetry Lab

Vocabulary: calorie, calorimeter, joule, specific heat capacity

Prior Knowledge Questions (Do these BEFORE using the Gi mo !"

#! $he %atin &or' calor means heat,) an' meter comes from the Gree* &or' meaning to

measure!) +hat 'o you thin* a calorimeter 'oes - calorimeter may.e an instrument use'

to measure heat in the unit calories!_____________________________________________

/! +here ha0e you hear' the &or' calorie .efore +hat 'o you thin* a calorie is $he &or'

calorie is often seen on foo' nutrition ta.les as a 'escription of the amount of energy____

pro0i'e' .y foo's that can .e use' .y human .o'ies!_____________________________

Gizmo arm!up - calorimeter is an insulate' container fille' &ith a li1ui',usually &ater! +hen a hot o.ject is place' in the calorimeter,

heat energy is transferre' from the o.ject to the &ater an' the&ater heats up!

2alorimeters can .e use' to fin' a su.stance3s speci"ic #eatcapacity ! 4ou &ill use the Calorimetry Lab Gi mo5 to'etermine the specific heat capacities of 0arious su.stances! #! On the 6789%-$7ON pane, select Copper ! 9se the sli'er to set its $ass to / g! 6et the

ater mass to / g! 2hec* that the ater temp is set to ; !


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/! 6pecific heat capacity can .e 'escri.e' as a su.stance3s resistance to temperaturechanges! +hich su.stance has a greater specific heat capacity, copper or &ater E plain!

+ater has the greater specific heat capacity as it e periences the most resistance to&ar's___

a change in temperature or energy there.y allo&ing it to retain more heat energy!___________


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'cti(ity ':

)eat trans"er

Get the Gi mo rea'y: 2lic* *eset ( "!

Question: #at "actors determine #ow #eat energy trans"ers between ob+ects,#! >re'ict : 7n the Gi mo &arm up, you sa& ho& / g of =


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C


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'cti(ity ' .continued "rom pre(ious page0

;! -naly e : For each factor liste' in the chart .elo&, e plain ho& the final temperature &aschange' an' &hy you thin* that change occurre'!

-! +hat &as the effect of increasing the &ater3s mass -s the &ater3s mass_______

increases the temperature of copper has less effect o0er the temperature of the__

&ater resulting in the mi ture3s final temperature .eing closer to that of &ater!____

B! +hat &as the effect of 'ecreasing the copper3s mass $he &ater has more influence

o0er the final temperature an' as a result there is not much of change to&ar's the

final temperature of the mi ture to&ar's that of copper3s initial temperature!_______

2! +hat &as the effect of changing the initial temperature of the copper +hen______

increasing the coppers initial temperature the change in the &aters final temperature

&as .igger!__________________________________________________________

@! Dra& conclusions : $he amount that the &ater3s temperature increases 'epen's on the massof the &ater an' the amount of heat energy in the copper!

-! ?o& 'oes changing the initial mass of the copper affect ho& much heat energy it

has 7ncreasing the coppers mass increases its o0erall impact on the final_______

temperature increasing it more su.stantially than the initial mass of copper!_______

B! ?o& 'oes changing the initial temperature of the copper affect ho& much heat

energy it has $he final heat energy increases or is higher than the initial heat___

energy!___________________________________________________________

C! -pply : 8any gyms an' health clu.s ha0e steam saunas, &hich are small steam fille' rooms!

$ra'itionally, steam saunas ha0e a container of heate' roc*s! - small la'le of &ater ispoure' on the roc*s in or'er to ma*e the steam!

-! 9se &hat you ha0e learne' so far a.out heat transfer to e plain ho& hot roc*s can

.e use' to ma*e steam $he rapi' mo0ing particles of the roc*s are sta.ili e' or

rather their energy is 'istri.ute' or lo&ere' .y the slo&ly mo0ing particles of &ater!


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?o&e0er as a result the final temperature of &ater increases! +ater special______

properties allo& it to retain its heat o0er larger .outs of time pro0i'ing goo' steaming

rooms! _____________________________________________________________

B! +hy 'o you thin* only a small la'le full of &ater is poure' on the roc*s at one time

- small la'le of &ater is place to re'uce the effect of the &ater on the final_______

temperature of the mi ture!______________________________________________


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'cti(ity 2:

Speci"ic #eat

Get the Gi mo rea'y: 2lic* *eset ! Deselect Copper , an' select Granite !

Question: )ow can you compare t#e speci"ic #eat capacities o" (arious substances,

#! E plain : ?o& 'o you thin* you can use the calorimeter to compare the specific heat

capacities of the su.stances liste' on the Gi mo One can compare the su.stance specific

heat capacities .y selecting the same masses an' temperatures against a constant mass of

&ater &ith the same temperature! $he closer the su.stances final temperature is to &ater

compare' to other su.stance in'icate the su.stance &ith the lo&est heat capacity!

/! >re'ict : +hich su.stance 'o you thin* &ill ha0e the highest specific heat capacity +hy

Granite is not a pure element an' is a mi ture of se0eral 'ifferent metallic elements_____

com.ine' through stronger ionic .on's than su.stance ma'e up &ith com.inations of the

same element an' so most li*ely has a higher heat capacity!_______________________

;! E periment : 9se the Gi mo to 'etermine the final temperature for each set up liste' .elo&!Recor' your results in the ta.le! $he first ro& has .een complete' for you!

Substance Substance initialtemp- ./C0Substance

massater initialtemp- ./C0

atermass

&inaltemp- ./C0

2opper =


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C! 7nterpret : Remem.er that specific heat capacity is a measure of a su.stance3s resistance totemperature change! $he more resistant a su.stance is to temperature change, the higher isits specific heat capacity!

Ran* the three su.stances in or'er of their specific heat capacities, from highest to lo&est!

Granite, 2opper, %ea'_______________________________________________________

.'cti(ity 2 continued on next page0


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'cti(ity 2 .continued "rom pre(ious page0

A! >re'ict : ?o& 'o you thin* the specific heat capacity of ice &ill compare to that of copper,

granite, an' lea' 7ce &ill contain a higher specific heat capacity 'ue to the fact that it is

&ater in a 'ifferent form or state!____________________________________________

! E periment : Deselect Lead , an' select 1ce! 9se the 'efault 0alues for %emp ( ;


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D! ?o& 'i' this e periment 'emonstrate ice3s high specific heat capacity $he_______

e periment 'emonstrate' the ice3s high specific heat capacity .y sho&ing the large_

increment .y &hich it ha' ma'e the temperature of li1ui' &ater 'rop! ____________


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'cti(ity C:

Calculatingspeci"ic #eat

Get the Gi mo rea'y: 2lic* *eset !

1ntroduction: $he specific heat capacity of a su.stance is the amount of energy nee'e' tochange the temperature of that su.stance .y #


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.'cti(ity C continued on next page0'cti(ity C .continued "rom pre(ious page0

;! 2alculate : 9se the Gi mo to mi / g of granite at #


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2! ?o& many *ilocalories (2alories" 'oes the snac* .ar contain ____/ 2alories____

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