CHY 103 Chapter 6: Chemistry Study Notes Chapter 6 Thermochemistry (Autosaved)

• School: Ryerson University
• Department: Chemistry
• Course: CHY 103
• Professor: Sharonna Greenberg

Document Summary

If the system loses energy, the surroundings gain the same exact amount of energy and vise versa. Internal energy: the internal energy of a system is the sum of the kinetic and potential energies of all of the particles that compose the system. In a chemical system, the reactants constitute the initial state and the products constitute final state: the ( u) difference in the internal energy between the products and the reactants. If the reactants have a higher internal energy than the products, (cid:1847)(cid:3046)(cid:3046) is negative and. The e(cid:374)e(cid:396)gy lost f(cid:396)o(cid:373) the syste(cid:373) e(cid:395)uals the e(cid:374)e(cid:396)gy gai(cid:374)ed (cid:271)y the surroundings. This is the amount of heat required to raise the temperature of 1 gram of the substance by 1 degree celsius: heat capacity is sometimes reported as molar heat capacity. When the volume of a cylinder increases, it pushes against an external force. Which is defined by force divided by area.