What is specific heat capacity?

The amount of energy required to raise the temperature of 1 kg of a material by 1°C.

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What is measured during the practical to determine specific heat capacity?

  1. Temperature change of material
  2. Voltage across heater
  3. Current through heater
  4. Time heater is on for

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What is the independent variable in the specific heat capacity practical?

Type of material being heated

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What is the dependent variable in the specific heat capacity practical?

Temperature rise of the metal block

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What are the control variables in the specific heat capacity practical?

  1. Mass of material
  2. Surface area of material

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What formula is used to calculate energy supplied by the electrical heater?

E = V x I x t


Where:

  • E = energy supplied (J)
  • V = voltage (V)
  • I = current (A)
  • t = time (s)

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What formula is used to calculate specific heat capacity?

c = m x ΔTQ​


Where:

  • c = specific heat capacity (J/kg°C)
  • Q = energy transferred (J)
  • m = mass (kg)
  • ΔT = change in temperature (°C)

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