CHEM 1060 Lecture Notes - Lecture 1: Exothermic Process, Heat Capacity, Thermodynamic System
27 Feb 2017
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Kinetic energy: energy associated with an object by virtue of its motion. Potential energy: energy an object has by virtue of its position in a field of force. Internal energy (u): kinetic and potential energies of the particles making up a substance. Joule (j): si unit of energy; 1 j = (1kg)(m2/s2) Calorie: non si unit of energy, amount of energy needed to raise the temperature of 1g water by 1oc, now defined as i cal = 4. 184 j. Calculate the kinetic energy of a moving object. Ek = 1/2mv2 d m = mass (kg) v = speed/velocity (m/s) Energy may be converted from one form to another but the total amount of energy remains. Thermodynamic system: substance or mixture of substances that we single out for study in which a change occurs. Surroundings: everything in the vin city of the thermodynamic system (its environment)
