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CHEMISTRY- 7.4 Quantifying Heat and Work- STUDY GUIDE WITH 100% CORRECT SOLUTIONS
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CHEMISTRY- 7.4 Quantifying Heat and Work- STUDY GUIDE WITH 100% CORRECT SOLUTIONS
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CHEMISTRY- 7.4 Quantifying Heat and Work-STUDY GUIDE WITH 100% CORRECT SOLUTIONS
Heat - ✔✔Transfer of thermal energy due to temperature difference.
Temperature - ✔✔Measure of average thermal energy in matter.
Thermal Equilibrium - ✔✔State where no net heat transfer occurs.
Heat Capacity (C) - ✔✔Heat needed to change temperature by 1 °C.
Proportionality of Heat and Temperature - ✔✔Heat absorbed is directly proportional to
temperature change.
Extensive Property - ✔✔Property dependent on the amount of matter present.
Specific Heat Capacity - ✔✔Heat required to raise 1 gram by 1 °C.
Molar Heat Capacity - ✔✔Heat needed to raise 1 mole by 1 °C.
Units of Heat Capacity - ✔✔Measured in J/°C or J/g·°C.
Second Law of Thermodynamics - ✔✔Heat transfer occurs from hot to cold naturally.
Thermal Energy Flow - ✔✔Always moves from higher to lower temperature.
Intrinsic Heat Capacity - ✔✔Substance's ability to absorb heat without temperature change.
, Steel vs Water Heating - ✔✔Water absorbs heat slower than steel due to higher capacity.
Heat Transfer Example - ✔✔Hot coffee cools by transferring heat to surroundings.
ΔT - ✔✔Change in temperature of a system.
q (heat) - ✔✔Amount of thermal energy absorbed or released.
Heat Absorption - ✔✔Process of a system taking in thermal energy.
Thermal Energy - ✔✔Energy related to the temperature of a substance.
Heat Transfer Mechanism - ✔✔Occurs until thermal equilibrium is achieved.
Heat Capacity Units - ✔✔Typically expressed in Joules (J).
Temperature Change Effect - ✔✔Higher heat capacity results in smaller temperature change.
Specific Heat Capacity - ✔✔Heat required to raise substance's temperature by 1°C.
Molar Heat Capacity - ✔✔Heat required to raise 1 mole's temperature by 1°C.
Intensive Property - ✔✔Property independent of substance amount.
Water's Specific Heat Capacity - ✔✔Highest among common substances; requires significant
heat.
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