# Chem1ACh6

 Energy (symbol and definition) E - anything that has the capacity to do work(Quantity that an object can posess) Work (symbol and definition) W - a force acting over a distanceW = force x distance(way an onject can exchange E w/ other objects [in and out]) Heat (symbol and definition) q - flow of energy caused by a difference in temperature(way an onject can exchange E w/ other objects [in and out]) Types of energy w/ description Kinetic - energy of motion OR energy being transferedThermal - energy with temperature (a form of Kinetic energy)Potential - energy stored in an object OR energy associated with composition/position of object cal, Cal, Joule, Kilojoule, and Killowatt-hour (kWh) 1 cal = 4.184 J 1 Cal = 4184 J 1 KJ = 1000 J1 kWh = 3.60 x 106 Joule definition Amount of E needed to move a 1Kg mass 1 meter calorie definition Amount of E needed to raise 1g H2O 1 °C Change in Internal E formula ΔE = q + WW = -PΔVq = Cs x Mass x ΔT Heat Capacity (symbol and definition) C - amount of energy required to change an objects temperature by 1 degree CDepends on amount of substance Specific Heat (symbol and definition) Cs - amount of energy required to raise the temperature of 1g substance by 1 °CDepends on type of substance (fixed amount) System/surroundings heat relationship qsystem=-qsurroundings qrxn=-qsol Bomb calorimeter details + formulas Constant volumeMeasures ΔEqreaction=-qcalorimeter=-CcalorimeterxΔTqreaction=-qcalorimeter-qH2O Coffee cup calorimeter details + formula Constant pressureMeasures ΔHqreaction=-qsolution=-Cs x Masss x ΔTs Enthalpy (symbol and definition) + equations H - total energy of a system (internal E + work) / determines endo/exothermicH = E + PV ΔH = ΔE + PΔVΔH = q (@ constant P) Standard Conditions (thermodynamics) + symbol symbol = °gas = 1 atm pressureliquid/solid = 1 atm pressure, 25°Csolution = 1M concentration Standard Enthalpy of formation (symbol + meaning)? ΔHf° - enthalpy change for the reaction forming exactly one mole of a pure compound from its constituent elements at standard conditionsΔHf° of elements is always - KJ/mol Standard enthalpy change (symbol + meaning + equation) ΔH° - enthalpy change when all reactants an products are in their standard statesΔH°reaction = ΣnΔHf°(products) - ΣnΔHf°(reactants) where n is the cefficient in the reaction Authorvictimsofadown ID74787 Card SetChem1ACh6 DescriptionChem1ACh6 Updated2011-04-07T01:13:41Z Show Answers