Accounts for _________ __________ in chemical changes occurring at: -Constant pressure -No forms of work are performed other than pressure-volume (P-V) work represents the _______________ in enthalpy ΔH = ΔH Endothermic _____________________________________________________________ – Exothermic ______________________________________________________________ – Heat and Work Identify each energy exchange as heat or work and determine whether the sign of heat or work (relative to the system) is positive or negative: An ice cube melts and cools the surrounding beverage. (The ice cube is the system.)
Accounts for _________ __________ in chemical changes occurring at: -Constant pressure -No forms of work are performed other than pressure-volume (P-V) work ΔH represents the _______________ in enthalpy ΔH = Endothermic – _____________________________________________________________ Exothermic – ______________________________________________________________ Heat and Work Identify each energy exchange as heat or work and determine whether the sign of heat or work (relative to the system) is positive or negative: An ice cube melts and cools the surrounding beverage. (The ice cube is the system.)
unit_5_students_notes_packet.docx