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[2026-08-07 Update]
The app’s visuals have been completely overhauled, with significant improvements made throughout the entire experience to provide a more polished, immersive, and engaging learning environment.
- Line a Petri dish with filter paper.
- Place the petri dish on the electronic balance and zero it.
- Add about 10 drops of acetone to the petri dish and measure the mass immediately.
- Observe how the mass changes over time. (Create a scene in which the mass decreases over time from the initial mass to 0 g.) Why does the mass decrease? Because the liquid acetone particles on the surface of the acetone become a gas and evaporate into the air.
- (Result) As the acetone dries, the scale on the electronic balance gets smaller and smaller until it reaches zero.
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