Chemistry 1301A/B Study Guide - Thermal Energy

• School: Western University
• Department: Chemistry
• Course: Chemistry 1301A/B
• Professor: Kay Calvin

Document Summary

Complete and incomplete combustion: hydrocarbon compounds burn in the presence of air to produce oxides complete combustion occurs if enough oxygen is present produces carbon dioxide and water vapour. Incomplete combustion: occurs when not enough oxygen is present other products can form (unburn carbon, carbon monoxide) Physical or chemical change heat lost exothermic temperature of surroundings increases. Physical or chemical change heat gained endothermic temperature of surroundings decreases. When the energy is written as part of the chemical equation, it is called thermochemical equation. Energy must be added to the reactants for it to occur. Bond energy is the energy that is absorbed or released when breaking or making a bond (usually measured in kj). Every chemical reaction involved both bond breaking and bond making. Since there are different types of bonds, the energies are different. This results in a net energy for reactions. Thermal energy: the kinetic energy of particles of matter.