ΔHrxn (Delta H reaction)
Definition
Delta H reaction refers to the change in enthalpy during a chemical reaction at constant pressure. It can be either positive (endothermic - absorbs heat) or negative (exothermic - releases heat).
Analogy
Imagine baking cookies. If your dough heats up and turns into delicious cookies, this process would be exothermic because it releases heat into your kitchen. On the other hand, if you put ice cubes into warm water and they melt while cooling down your drink, this process would be endothermic because it absorbs heat from its surroundings.
Related terms
Endothermic Reaction: A type of chemical reaction that absorbs heat from its surroundings.
Exothermic Reaction: A type of chemical reaction that releases heat into its surroundings.
Thermochemistry: The study of the energy and heat associated with chemical reactions.
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