Part A What is a combustion reaction? Why are combustion reactions important? Match the items in the left column to the appropriate blanks in the sentences on the right. Reset Help to form radioactive particles Combustion reactions are characterized by the reaction of a substance with Combustion N2 compounds. Combustion reactions emit one or more reactions are important because most of society's energy is derived from them. oxygen-containing chlorine-containing nitrogen-containing ultraviolet light 02 heat Cl2
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
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