Entropy in Chemistry

Counting the ways

An interactive lesson with 6 steps, about 5 minutes: you predict, drag and solve, with instant feedback on every answer. It runs in your browser and needs JavaScript.

What you’ll learn

• Entropy: number of arrangements. Gas ≫ liquid > solid.
• More gas molecules made → entropy rises.

Steps

1. Not just downhill
2. Why gases spread
3. More or less?
4. Calculate ΔS°
5. Rank by entropy
6. Entropy goes up