ENGG 201 Lecture Notes - Lecture 3: Kinetic Energy, Potential Energy, Molar Volume
20 Jan 2016
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Document Summary
Concept of temperature objects can feel hot or cold When a hot object is brought into contact with a cold object, the hot object gets cooler and the cold object gets warmer. A substance can exist in di erent states (s, g, v) depending on whether it is hot, warm, cool, cold, etc. Need a quantitative measure of hot, cold, temperature reference states water (h2o) @ 1atm freezing = 0 deg c. Boiling = 100 deg c four di erent scales: 4 - equilibrium between phases of matter a substance can exist as di erent phases at di erent conditions (temp, pressure, ) At some conditions-more than one phase can co-exist. If multiple phases coexist for a long time -> equilibrium. Thermal system is at a uniform temperature throughout. No changes due to net physical movement of material in the system. Di usional no net movement of substances between the pphases.
