CHEM 120 Lecture Notes - Lecture 4: Kinetic Energy, Internal Energy, Potential Energy

• School: McGill University
• Department: Chemistry
• Course: CHEM 120
• Professor: Laura Pavelka, Samuel Sewall, Pallavi Sirjoosingh

Document Summary

Free to exchange both matter and energy with surroundings. Free to exchange only energy with surrounding. No matter of energy exchanged in surroundings. January 17 2019: lecture 4: non-ideal gases and thermo. The part of the universe we are studying. Work is done when a force acts over a distance. Energy associated with motion of a body or particles. Energy associated with position of a body. Related to forces of attraction, repulsion, and chemical bonding. Sum of the ke and pe of each particle in the system. Quantity of energy (q) transferred between a system and its surroundings because of a temperature difference. A measure of average kinetic energy per particle. If two systems are in thermal contact," and there is a temperature difference between the systems, then heat will flow between systems until the temperatures are equal. Presence or external pressure results in a change of volume.