Final answer:
The spacing and arrangement of particles in a solid, liquid, and gas are described. In a solid, particles are close together and regularly arranged, while in a liquid, particles are close together but randomly arranged. In a gas, particles are far apart and randomly arranged.
Step-by-step explanation:
In a solid, the particles are close together and regularly arranged. In a liquid, the particles are close together but their arrangement is random. In a gas, the particles are far apart and randomly arranged.
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