specific heat capacity practical Flashcards
what equipment do you use to measure mass
balance
what do you use to emasure temp
thermometer
what do you use to make energy transferred
joulemeter
what do you use to heat a metal block
heater
what do you use to meadure time
stopwatch
what unit is energy transferred measure in
joules
what init is temperature measured in
°C
what unit is mass measure in
kg
why may the result you obtain for specific heat capacity be dofferent to true value
heat loss, turned off power supply too early, incorrectly measured mass pf substance, incorrectly measured temp, incorrectly measured energy transferred
why should the material the shc is being determine for be insulated
prevents heat loss and so the shc will be more accurate
when determining shc of a mayerial what variables should be controlled
mass of the block, dimensions of the block, material of the block, current through heater, thickness of insulation, material of insulation, starting temp and time interval
what could be used to insulate the metal block
bubble wrap, cotton wool
what measurements do you need when calculating shc
mass, temp change, energy supplied
what do you use as a power supply when determining shc
powerpack
what voltage should a powerpack be set to when determining shc
12 V
