Solid (Ice):
* Particle arrangement: Particles are tightly packed in a regular, crystalline structure.
* Motion: Particles vibrate in fixed positions, with limited movement. This vibration is relatively slow and has a small amplitude.
Liquid (Water):
* Particle arrangement: Particles are still close together, but they have more freedom to move around. The structure is less rigid than in ice.
* Motion: Particles move more freely, sliding past each other. The vibration increases, and the particles have a larger amplitude of motion.
Gas (Water Vapor):
* Particle arrangement: Particles are far apart and move randomly in all directions. There is no fixed structure.
* Motion: Particles move very quickly and have high kinetic energy. They collide frequently with each other and with the walls of their container.
Summary:
As water transitions from solid to liquid to gas, the particles gain more kinetic energy, leading to:
* Increased particle separation: The particles move further apart.
* Increased particle motion: Particles move faster and have greater freedom of movement.
Important Note: These transitions require energy input. To melt ice, heat energy needs to be added to increase the vibration of the water molecules. To boil water, even more energy is needed to break the bonds between the molecules and allow them to escape into the gas phase.
