Specific Heat Capacity-LAB (1)

Specific Heat Capacity: Heating Up

Purposes • •

To determine determine the specific heat capacity of various substances substances To potentially potentially identify materials by their specific heat capacity

Set Up Obtain a thermometer, two styrofoam cups, some string or fishing line and a metal cylinder.

Measurements Description of object: The mass of the styrofoam cup The The mass mass of the the sty styro rofo foam am cup cup wit with h wat water er The mass of the water m c+w - mc The mass of the object The initial temperature of the object The start temperature of the water The hihest final temperature of the water and object

Run 1 mc m c+w mw mx Tix Tiw

Run 2 mc mc+w mw mx Tix Tiw

Tf 

Tf 

Procedure 1! 2! &! (! )! ! ! .! 0!

"ass the #tyr "ass #tyrofo ofoam am cups cups alon alone e $btain $btain boilin boilin water water in in a plastic plastic bea%e bea%err $btain room temperature temperature water water'' put into #tyrofoam #tyrofoam cup! Record its Temp! Temp! "ass the the #tyrofoam #tyrofoam cups cups + room room temperatur temperature e water water! *ut the the metal metal object object in the the boilin boilin water water!! ,ait ,ait two minutes! Record Record Temperature Temperature immediately before doin doin #tep ! Rapidly Rapidly trans transfer fer the object object to the cup cup with water water!! /ap the cup cup with the second second cup and water water and watch watch the tempera temperature ture rise! rise! Record Record the hihest hihest tempera temperature ture reached reached by the object object and the water water in the table above!

Theory

Calculations *Note that the specific heat capacity of water, c w ,  is 4.18 Joules/(gram ·K)

irst law of thermodynamics: nery is conserved! 3eat is conserved! The object cooled down! The water warmed up! The object lost heat! The water ained heat! The heat lost by the object to the water is e4ual to the heat ained by the water! 3eat is measured in calories! The letter 5 is used for heat in calories! cx "etal 61 7 8888888888 9#how formula with letters' substitution' solvin and final ans!

cx "etal 627 8888888888 9#how formula with letters' substitution' solvin and final ans!

;f you can determine the material' then wor% out the percentae error for your experiment usin the table below #how formula' values used' etc!

< rror "etal 61 7 88888888

< rror "etal 62 7 88888888 Conclusion: ,rite a short conclusion indicatin what went well or not so well' how lab could be improved' li%ely sources of human and systematic error' and expected or unexpected results

Taken from the College of Micronesia Physics http://shark.comfsm.fm/~dleeling/physics/specificheat.html  and Front Range Community College http://frcc.cc.co.us/docs/cms/0!"P#$%&'P(C)F)C"#(*T"C*P*C)T$"+F"M(T*,'"%00-.pdf