CHEM 1A03 Lecture Notes - Heat Capacity, Paraffin Wax, Intermolecular Force

• School: McMaster University
• Department: Chemistry
• Course: CHEM 1A03
• Professor: Jeff Landry

Document Summary

Heat is given off by a reaction: combustion (burning reaction) --> exothermic (energy is given off -- going out of the system, anytime energy leaves a system it"s considered to be negative and visa versa. Other ways that can give off energy from a reaction: light. When we"re emitting photon, energy is transferred around, electrons are dropped to lower levels, and gives off energy. Energy given off more on a larger scale: global energy sources. #1 is oil, humans suck at storing energy, we can"t even store enough energy in our cells to go to montreal :) Total volume of oil, coal is larger so it"s cleaner, Hydro is not very well used, fossil fuels non renewable:oil, coal, gas. Hydrogen looks really really high in term of energy. Sources of energy that we can actually store: natural gas, gasoline, coal.