An endentropic reaction refers to reactions where there is a decrease in entropy; meaning, there's less disorder after the reaction than before it.
Consider a messy room. If you spend time cleaning and organizing, the room becomes less chaotic (low entropy). This act of cleaning is like an endentropic reaction because it decreases disorder.
Endothermic Reaction: A chemical reaction that absorbs heat from its surroundings.
Non-spontaneous Reaction: A reaction which will not proceed without energy input from an external source.
Activation Energy: The minimum amount of energy required to start a chemical reaction.
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