Biology / Unit 3 Bio 0494 short lesson, about 20 seconds
"Spontaneous Means Instantaneous"
Captions available
The idea
A spontaneous reaction is one that releases energy and needs no outside energy source to proceed — it says nothing about how fast that reaction runs.
In practice
Iron rusting is a spontaneous, exergonic reaction that can still take years to finish.
Where people slip
Confusing "spontaneous" with "instant" misreads a claim about energy direction as a claim about reaction speed.
Your place on the trail
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Unlocks
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