CHEM 123 Chapter Notes - Chapter 4: Ideal Gas, Irreversible Process, University Of Houston

• School: UBC
• Department: Chemistry
• Course: CHEM 123
• Professor: Glenn Sammis

Document Summary

System: the portion of the universe selected for a thermodynamic study. Surrounding: the portion of the universe with which a system interacts. Open system: one that can exchange both matter and energy with its surrounding. Closed system: one that can exchange energy but not matter with its surrounding. Isolated system: one that exchange neither energy nor matter with its surroundings. Work: form of energy transfer between a system and its surrounding that can be expressed as a force acting through a distance (w =fd: 1 joule = 1 kg m2 s-2. Kinetic energy: energy of motion (ek = 1/2mu2) Potential energy: energy due to position or arrangement. It is the energy associated with forces of attraction and repulsion between objects. Elastic collision: kinetic energy = potential energy; sum of potential and kinetic energy remain constant. Distinguish between temperature and thermal energy distinguish between energy changed produced by work and heat (transfer of thermal energy)