Specific Heat Capacity

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    • The specific heat capacity is the amount of energy needed to raise the temperature of 1 kg of a substance by 1°C.
    • ΔE=\Delta E =mcΔΘ mc \Delta Θ
      • Change in thermal energy (J)
      • Mass (kg)
      • Specific heat capacity (J/kg°C)
      • Temperature change (°C)
    • Practical Method
      • To measure the specific heat capacity a block of the substance is needed with a hole for the heater and thermometer
      • Measure the mass of the block and then wrap it in a insulating layer to prevent heat lost to the environment
      • Measure the initial temperature and the and set the power supply to 10 volts, turn on and start a stopwatch
      • The current does work on the heater transfering electric energy to thermal energy
      • Measure the temperature of the block every minute for 10 minutes
      • Repeat with different material to compare specific heat capacity