ECON 102 : NPRE 101 Class Notes.docx

• School: University of Illinois
• Department: Economics
• Course: ECON 102
• Professor: All

Document Summary

3: everything is trying to move to a more stable state, aluminum oxide: very stable, seashell: combines with calcium carbonate to for shells, sodium & water, energy measuring units: joules, e=mc2: the energy released is due to the missing mass of the products compared to the mass of the starting materials; change in mass means change in energy. Thermodynamics/physics of energy: energy is released when bonds are broken, but the energy of the original substances will be the same as the final substances; energy is neither los nor gained in the overall reaction(cid:224)second law of thermodynamics, all atoms are in a constant state of motion, what changes is how fast they are vibrating & this then in turn affects the amount of heat they give off the average kinetic energy per particle in a system it is not the same as heat.