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🧊 Freezing Point Depression & Boiling Point Elevation

Interactive 3D beaker of solvent where adding solute particles via a slider shifts the simulated freezing and boiling points, plotted live against a colligative-properties phase diagram.

Chemistry & Materials3DModerate60 FPS❄️ Ice & Cold

A 3D beaker of solvent where dragging in dissolved solute particles visibly shifts the freezing point down and the boiling point up, with a live phase-change graph plotting both temperatures against concentration.

🔬 What It Demonstrates

Both freezing point depression and boiling point elevation are colligative properties: ΔT scales with the van 't Hoff factor times the solvent's Kf or Kb constant times molality, regardless of what the solute actually is.

🎮 How to Use

Drag in solute particles, adjust the van 't Hoff factor and ambient temperature, and switch solvents to see ice crystals form below the new freezing point or bubbles and steam appear above the new boiling point.

💡 Did You Know?

Camphor has such a huge cryoscopic constant (Kf ≈ 37.7 °C·kg/mol) that chemists historically used it to measure unknown molar masses just from how much its melting point dropped.

⚙ Under the hood

Interactive 3D beaker of solvent where adding solute particles via a slider shifts the simulated freezing and boiling points, plotted against a colligative-properties graph.

freezing-point-depressionboiling-point-elevationcolligative-propertieschemistrysolutions

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install