Chem133 Chapter6

Also called thermal energy (symbolized by q) is the energy transferred as a result of a difference in temperature between the system and the surroundings.

The energy transferred when an object is moved by a force.

• D.
• ⌂E=q+w
• Change in energy is equal to the sum of energy transferred as heat and/or work.

1cal=4.184J

• q_p=⌂E+P⌂V=⌂H
• Heat transferred equals the sum of the change of energy with the PV work done by the system. 
• These two equal the change of enthalpy.

The quantity of heat required to change the temperature of 1 gram of the object by 1K