 # Specific Heat Experiment

THE SPECIFIC HEAT CAPACITY OF WATER AND METAL

INTRODUCTION. When the same amount of heat is transferred to two different objects, there is an increase in internal energy by the same amount but this does not necessarily cause a rise in temperature (Hudson, ND). The effect of heat transfer on temperature depends on the amount of heat energy transferred, the mass of the object and the specific heat capacity of the material of which the material involved is made (Hudson, ND). Therefore, the specific heat capacity of a substance is the amount of heat required to raise the temperature of 1Kg of the substance by 1 kelvin (Hudson, ND). Due to the differences in the molecular structures of various materials, they would have different
The mass of the substance was measure on a scale balance. Also the temperature of the substance (water or metal) was measured using a thermometer at a given time. A pre-heated immersion heater was placed in the substance and allowed to cool off. Therefore in the case heat was being transferred from the heater to the substance (water/ metal). The specific heat capacity was calculated.

THEORY. For a definite amount of energy, ∆E, transferred to a material, the temperature change, ∆θ is related to the mass of the material, m, and the specific heat capacity, c, is expressed as (Hudson, ND): ∆E=mc∆θ
Rearranging the above, c= ∆E/ m∆θ From the above, the mass is measured in Kilogram (kg), whereas the temperature (∆θ) measured in Kelvin (K). The energy transferred is measured in Joules (J). To this end, the unit for specific heat capacity is Jkg-1K-1.

APPARATUS USED FOR THE EXPERIMENT. 1 x 12V immersion heater. 1 x 500mL beaker 2 x 1kg block of metal with two holes. 1 x Thermometer -10 to 110℃ 1 x 12V power supply