Definitions
Occurs when an object is moved against an applied force.
What is work?
A measure of the amount of thermal energy contained by a substance.
What is Temperature?
Equation for Heat.
Q=mcΔT
Number of J in 1 kJ.
What is 1,000?
The unit for heat.
What is the joule?
The capacity to do work.
What is Energy?
The amount of heat required to change its temperature.
Equation for expansion Work.
w=-PexΔV
The specific heat of water.
What is 4.184 J/g*K?
Letter abbreviation for heat.
Type of reaction where heat is transferred from the system to the surroundings.
What is Exothermic?
The quantity of heat (gained or lost) that is required to change the temperature of 1 gram of that substance by 1°C.
What is Specific Heat Capacity?
Equation for change in Energy.
What is ΔE= Q+W?
Type of reaction when ΔE is negative.
What is exothermic?
Letter designation for Specific Heat.
What is "Cs"?
Type of reaction where the heat is transferred to the system from the surroundings.
What is endothermic?
A property that depends only on the current state of the system and independent on how the state was achieved.
What is State function?
Equation for Heat Capacity.
What is C= Q/ΔT?
Type of reaction when ΔE is positive.
What is endothermic?
Letter for Internal Energy.
What is "E"?
Measure of energy of a system that accounts for heat flow at constant pressure.
What is Enthalpy?
Cp,m > Cv,m True or false?
True. At constant pressure, not all of the heat supplied is used to change the temperature. Some of the heat supplied returns to the surroundings as expansion work.
Equation for Molar Heat Capacity.
What is Q= nCmΔT?
What is R? (in Enthalpy)
8.314 J/molK
Is delta ΔE the same as ΔU? What does each of them represent?
Yes (chem6b). ΔE represents change in energy whereas ΔU represents change in internal energy