CHEM 1A03 Chapter Notes - Chapter Unit 8 Module 1: Cellular Respiration, Exothermic Process, Potential Energy
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CHEM 1A03 Full Course Notes
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A combustion reaction is between a fuel and an oxidant. In most combustion reactions we are familiar with, the oxidant is oxygen and the products are carbon dioxide, water and energy this is not always the case. Combustion reactions can be classified into 2 classes: rapid combustions accompanied by the production of both heat and light (similar to a match burning) These types of reactions are normally used for heating fuels like methane, oil or other fossil fuels: slow combustion. Takes place at low temperatures as in cellular respiration in the body. Often involves burning or metabolism of sugars, carbohydrates and fats gives us energy to perform tasks. Endothermic reactions require energy energy is a reactant: ex: photosynthesis requires light energy, h > 0. Exothermic reactions produce energy energy is a product: ex: burning starch, protein, fat or fossil fuels, h < 0. A system is defined based on the situation we are dealing with.