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Specific Heat Capacity. specific heat capacity (c): The amount of heat required to raise the temp. of one gram of a specific material by 1 °C. Specific Heat Capacity, continued. Specific heat capacity describes how much energy is required to raise an object’s temperature.
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Specific Heat Capacity • specific heat capacity (c): The amount of heat required to raise the temp. of one gram of a specific material by 1 °C
Specific Heat Capacity, continued • Specific heat capacity describes how much energy is required to raise an object’s temperature. • Specific heat capacity is a characteristic physical property of matter • It is represented by c. • Specific heat capacity can be used to figure out how much energy it takes to raise an object’s temperature.
Specific Heat Capacity, continued Specific Heat Capacity Units -calories (cal), -kilocalories a.k.a. Calories (Cal), -or Joules (J) Specific Heat of Water = 1 cal g·ºC What does this mean?
Specific Heat Capacity, continued Specific Heat Equation (on your formula sheet) Total heat energy = temperature mass specific heat capacity Total Heat = mcT Δ heat energy = Δ temperature mass specific heat capacity Q = mc Δ T
VariableSymbolUnits ∆ Heat Q cal or J (Joules) Mass m g Sp. Ht. Cap. C J or cal g·°C g·°C ∆Temp. ∆T °C or K
Math Skills Specific Heat Capacity Calculations How much energy must be transferred as heat to 200 g of water in a bathtub to raise the water’s temperature from 25 °C to 37 °C?
Math Skills, continued 2. Write down the specific heat equation. energy = cmDT 3. Substitute the specific heat, mass, and temperature change values, and solve.
Specific Heat, continued • Heat raises an object’s temperature or changes the object’s state. • While a substance is melting or boiling, the temperature does not change.
