Activation Energy · Simple tourStep 1 of 6Room temp
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The idea in one breath: Molecules must collide with enough energy to climb an invisible hill before they can become new products. At room temperature most are too slow — that's why wood doesn't burst into flame. Heat, sparks, or a catalyst change the odds.
Not "willingness to react." Even eager chemicals wait for a lucky fast collision. Activation energy is a physical barrier — bonds must stretch and break first.
1 · Slow roomCool molecules shuffle and bounce — almost no reactions.
2 · Speed lotterySome molecules are fast, most are slow — it's random.
3 · The hillEvery reaction has an energy hill (activation energy Eₐ).
4 · BounceToo slow → hit the hill and bounce back unchanged.
5 · SuccessFast enough → climb the hill → new products form.
6 · CatalystA helper lowers the hill — same outcome, easier path.