CHM 1311 Lecture Notes - Lecture 4: Exothermic Process, Calorimetry, Potential Energy

• School: University of Ottawa
• Department: Chemistry
• Course: CHM 1311
• Professor: Darrin Richeson

Document Summary

The capacity to do work or to produce heat. Kinetic energy is the energy of motion. Potential energy is the energy an object possesses by virtue of it position, condition, or composition. Si units for energy is the joule, j. Ek = 1/2mv^2 = kg(m/s)^2 = 1j. We sometimes use the calorie instead of the joule. System: part of the universe we are interested in. A property that depends on the amount of substance in the system. A property that does not depend on the amount of substance in the system. Energy is the capacity to do work or transfer heat. Work is the movement against a force. The internal energy u, of a system is the sum of the potential and kinetic energies of all the particles present. The total energy of the universe remains constant. A change in the energy of system must be accompanied by an equal and opposite change in the energy of the surroundings.