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Thermochemistry Chapter 6.

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Presentation on theme: "Thermochemistry Chapter 6."— Presentation transcript:

1 Thermochemistry Chapter 6

2 Vocabulary Energy Law of conservation of energy Potential energy
Kinetic energy Heat (q) Work (w) Pathway State function System Capacity (C) Specific heat capacity Molar heat capacity Constant-pressure calorimetry Surroundings Exothermic Endothermic Thermodynamics First law of thermodynamics Internal energy (E) Enthalpy (H) Calorimeter Calorimetry Constant volume Hess’s law Standard enthalpy of formation Standard state

3 6.1 The Nature of Energy Temperature vs. Heat:
Temperature reflects the random motions of the particles in a particular substance Heat involves the transfer of energy between two objects due to a temperature difference Ways to transfer energy: Work Heat When energy is transferred, the total energy transferred is constant; however, the amount of heat and work involved depend upon the pathway. A change in a state function is independent of the pathway Energy is a state function Work and heat are NOT state functions

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