Which course are you taking?
You can change this later with the Level button at the top.
Before the bench unlocks
Speed
⏸ Paused. Press Space or Play.
Particle window zoom
How to use the bench (mouse, touch, or keyboard)
- Run it: use the buttons in the Lab bench panel to mix the reactants. Play runs the bench clock (4× real time at ×1) and the particle window together.
- Slow motion: ×0.1 shows every collision’s energy meter. Step stops at each collision between reactants: press → (or Next collision) for the next one.
- Zoom the particle window: the slider, the − / + buttons, scroll over it, pinch, or Z / X.
- Look closer: point at (or tap) anything on the bench or any particle to see what it is.
- Keys: Space play / pause · → next collision · R reset · Z / X zoom · H help.