| Measure | Value |
|---|
Melting points, boiling points and heats of fusion and vaporization are real values for 1 mol at 1 atm. Heat capacities are approximate. Time is sped up a lot, and the particle box shows only a few dozen molecules.
| Measure | Value |
|---|
Water's vapor pressure uses Antoine-equation data; CO₂'s uses the Clausius-Clapeyron equation through its triple and critical points. The melting lines are close to real but simplified. The pressure axis is logarithmic.
Number problems show a worked solution with units cancelling (struck through in red) and conversions flagged in gold. Ranking and phase-diagram problems are "predict, then watch": the picture reveals the answer after you check.
Your job
Drag a card onto a box, or tap a card and then tap the box's name. Cards are buttons, so Tab and Enter work too.
Teaching models with rounded values. Not medical advice.
Wrong picks are fine here. Each one tells you why.