CHEM 1A03 Chapter Notes - Chapter 7: Heat Capacity, Endothermic Process, Thermal Energy

• School: McMaster University
• Department: Chemistry
• Course: CHEM 1A03
• Professor: Aadil Merali Juma

Document Summary

Combustion or burning is a complex sequence of exothermic chemical reactions between a fuel and an oxidant. Rapid combustion accompanied by the production of heat or both heat and light in the form of either a glow. Slaw combustion takes place at low temperatures: eg/ respiration. Comparing heats of combustion: the higher the heat of combustion, the better the fuel. Sunlight (energy) is used to build glucose and other simple sugars. 6 co2 + 6h2o c6h12o6(s) + 6o2(g) Energy is extracted by combustion of the plant material. As the forward process is endothermic, h>0. Non-renewable: plant matter, aged> 300 million years. Contributions to global warming: net co2 increase in atmosphere. System part of the universe chosen for study. Surrounding the part of the universe outside the system with which the system interacts. Open system material and energy change. Energy the capacity to do work.