Chemistry / Chem 0637 · Atom · ~20 seconds
Exothermic and Endothermic Processes
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State
An exothermic process releases heat from the system into its surroundings; an endothermic process absorbs heat into the system.
Show
A cold pack feels cold because dissolving salt inside it absorbs heat from your hand, an endothermic process for the pack.
Watch for
Students often label a process exothermic or endothermic from its own temperature change, not from the direction heat crosses the boundary.