CHEM 211 Lecture Notes - Lecture 12: Thermodynamics, Enthalpy, Heat Capacity

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Solid molecule- no movement, less ke than gas or liquid. Gas have greatest because it have a lot of velocity and movement = ke. Lower energy state = more stable and favored over higher energy. Can be converted from 1 form to another. Thermodynamics- study of energy and its transformations (control everything) Gasoline burning car engine, this make the car move done with work, have combustion, which makes your wheel move. Internal energy (delta e) = can only measure change , sum of pe and ke of all particles present, changes of total energy. E final < e initial = e is negative. E final > e initial = e is positive. Hot to cold, losing energy, heat is being lost. First law of thermodynamics- total energy of the universe is constant. To lose gas (enthalpy), have to heat in order to lose it. (change of enthalpy)e = q + w (heat and work)