What is a solid body?

Substances can be solid, liquid and gaseous. When cooling and heating, when the energy of the particles that make up the substances changes, they move from one state to another. Particles in solids are located close and firmly bound. Therefore, solids have a certain shape and volume. The liquid particles are less interconnected, and therefore they can move relative to one another. Liquids take on the shape of any vessel, although the volume remains the same. Gas particles are free. They chaotically move and therefore try to fill the capacity of any size. The process of converting a liquid to gas is called evaporation.

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