Endothermic and Exothermic Reactions

Topics: Chemical reaction, Thermodynamics, Exothermic Pages: 2 (301 words) Published: March 7, 2013
Omar Nunez
Period 8
February 7, 2013
Mrs. Dube
Endothermic vs. Exothermic Reactions
Brr! Exclaimed a kid who touched citric acid and baking soda combined. When those two mix, it creates a cold endothermic reaction. An exothermic reaction is a reaction that releases energy in the form of an increase in temperature. Endothermic reactions are reactions that absorb energy and cools down surroundings. (Many examples give away exo and endothermic reactions). So listen up!

To begin with, a chemical reaction in which energy is released is an exothermic reaction. Heat comes out of, or is released from, a reacting substance during an exothermic reaction.” A good example can be the combustion of methane gas because it releases a large amount of heat”. In an exothermic reaction, bond energies of reactants are less than products. That’s what an exothermic reaction is; energy is released as a product of the reaction.

Furthermore, a chemical reaction in which energy is absorbed is an endothermic reaction. Commonly, heat is absorbed creating the endothermic reaction. “A good example of an endothermic reaction can be the decomposition of sodium chloride”. In an endothermic reaction, bond energies of the reactants are greater than the products. An endothermic reaction needs energy as a reactant to proceed.

Lastly, they have some similarities. Exothermic and endothermic reactions are similar because they both undergo a chemical change. They also involve energy; most common in the form of heat. Sometimes, they have to tag team to supply energy. Those are some of their similarities.

To conclude, exothermic and endothermic reactions work together and differ. An endothermic reaction usually absorbs heat, an exothermic reaction releases energy. They also are partners because they supply energy. These are the differences that you’ll look for when figuring out an endothermic reaction and exothermic reaction has happened.
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