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Mistake Master · AP Chemistry · Unit 5 · Step-Through Animation

Energy Is Not Enough

You'll learnwhy a collision reacts only when it carries enough energy and arrives pointing the right way.

Two molecules meet a billion times a second and almost never react. Watch one collision clear the energy barrier by a mile and bounce straight off anyway. Twelve short steps; press Next for each one.

12 STEPS · 6 QUICK CHECKS · NO + O3 → NO2 + O2 · Ea = 10.5 kJ/mol · v4

two collisions · one energy curve · one line drawn on it
Before you start
What you're looking at
Two collisions between the same molecules, nitrogen monoxide and ozone, run side by side.
The question
One reacts and one bounces off. What decides which?
Step 1 / 12