Discover how energy transforms during chemical reactions and much more in this tutorial. Compare and contrast endothermic and exothermic reactions, and learn how heat is either absorbed or released during chemical reactions. Learn how to use your sense of touch to determine if a chemical reaction is exothermic or endothermic.
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Exothermic reactions are a type of chemical reaction that release heat as a part of the reaction. Heat escapes the reaction and is lost to the surroundings of the reaction therefore warming the surroundings. In an EXothermic reaction heat is EXiting. If an exothermic reaction were happening in a test tube and you were to touch the test tube after the reaction was done it would feel warm.
Endothermic reactions are a type of chemical reaction that must somehow take in heat for the reaction to take place. If an endothermic reaction were happening in a test tube and you were to touch the test tube after the reaction was done it would feel cold.