Particle Model

In the particle model we imagine that all bodies are made up of the smallest particles, such as small balls.
In the particle model we imagine that all bodies are made up of the smallest particles, such as small balls.
Like any model, this is a simplification of reality that, however, allows many phenomena to be well explained.
In this slideshow, the balls are colored differently to be able to track the movement.
In the aggregate state solid the particles are close together. They occupy fixed places and can only swing around them.
When the body heats up, the state of aggregation changes to liquid, allowing the particles to leave their fixed places.
They move faster and the distances between particles increase.
Liquid bodies always form a surface.
The warmer the body, the easier it is for individual particles to penetrate the surface.
In the physical state of gaseous all particles move freely, they occupy the available space completely.
The particles are now the fastest, the distances between them the largest.