Description
🔍 Explore
Connect particle motion and attraction with solids, liquids, gases and phase changes.
🎮 Try It
Choose a substance, then select Solid, Liquid or Gas and compare the particles. Heat and cool it while watching temperature and pressure. In Interaction mode, change attraction strength and atomic radius and inspect the potential-energy graph.
🎯 Your Mission
Choose two substances and predict whether the same heating steps will make their particles behave alike. Test them and describe one important difference.
🌍 Real-World Connection
Water changes state when ice melts, a kettle boils, or vapour condenses on a cool surface.
