Choose the word from the word bank below that best matches each statement. Constant Equilibrium Increases Temperature Chemical Endothermic Reactant Closed system Exothermic Reversible 6. When writing an endothermic reaction, heat energy is stated as a 7. The double-headed arrow indicates that a reaction is 8. A chemical reaction that absorbs energy is an 9. A chemical reaction that releases energy is an 10. Le Chatelier's Principle states that the equilibrium of a will shift so as to relieve the stress, thereby restoring equilibrium.
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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