In the solid state, particles are closely packed together and have a definite _____.

In the solid state, particles are closely packed together and have a definite shape and volume. This is due to the strong intermolecular forces that hold the particles in fixed positions, preventing them from moving freely. As a result, solids maintain their shape and do not conform to the shape of their container, unlike liquids or gases. The rigidity of solids is a key characteristic, making them distinct from other states of matter. Additionally, the closely packed arrangement of particles in solids also contributes to their density, which is typically higher than that of liquids and gases. Overall, these properties make solids an essential state of matter with unique physical attributes.