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Which of the following options does NOT represent a characteristic of solids?
Solids have a definite shape.
Solids have negligible compressibility.
Solids have fixed volume.
Solids have indistinct boundaries.
Solids have indistinct boundaries.
Solids are characterized by a rigid structure where particles are held in fixed positions by strong intermolecular forces. Unlike gases and some liquids, which can flow and expand to fill any container, solids possess a fixed volume and a definite shape, and they have distinct boundaries.
Solids are characterized by a rigid structure where particles are held in fixed positions by strong intermolecular forces. Unlike gases and some liquids, which can flow and expand to fill any container, solids possess a fixed volume and a definite shape, and they have distinct boundaries.
Think of a brick; no matter what bucket or shelf you place it on, it maintains its own rectangular shape and occupies the same amount of space, unlike water which takes the shape of its container.
In the solid state, the constituent particles (atoms, molecules, or ions) have strong inter-particle attractive forces. These forces minimize the distance between particles, resulting in high density and very low compressibility. The particles can only vibrate about their fixed equilibrium positions, preventing them from flowing or changing shape under normal conditions.
Solids have high density due to close packing of particles.
The kinetic energy of particles in a solid is minimal, limited to vibrations.
Indistinct boundaries are characteristic of gases or liquids that spread, not solids.
Construction materials (bricks, steel)
Manufacturing of stable tools and machinery
Option A (Definite shape) is a fundamental property of solids.
Option B (Negligible compressibility) is correct because intermolecular spaces are minimal.
Option C (Fixed volume) is correct because particles are locked in place.
Option D (Indistinct boundaries) is FALSE, as solids are defined by their sharp, distinct geometric edges.
D is correct тАФ Solids possess definite, distinct boundaries, making the statement 'Solids have indistinct boundaries' incorrect.
Always remember that 'Indistinct boundaries' is a property associated with fluids (gases/liquids), which flow to match their container's shape.
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