Question

Why do solids have a fixed shape and a definite volume???​

Answer 1

Answer:

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★. In solids, the particles are very tightly packed with each other and cannot move. Hence,solids have a fixed shape and a definite volume.

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Answer 2

ANSWER:

Solids have a fixed shape and definite volume because in solids particles are held together by strong forces so they are not free to move. But they do vibrate on their places. These particles are usually close together and form regular arrangements.

Extra Information:

1). Physical Properties of Solids:

• Fixed mass, volume and shape .
• Inter-particle distances are least.
• In-compressible.
• High density and do not diffuse .
• Inter particle forces of attraction are strongest.
• Constituent particles are very closely packed.

2). Physical Properties of Liquids:

• Not fixed shape but fixed volume and mass.
• Inter particle distances are larger than solid.
• Almost incompressible.
• Density is lower than solids and can diffuse.
• Inter particle forces of attraction are weaker than solids.
• Constituent particles are less closely packed.

3). Physical Properties of Gases:

• Neither fixed shape nor fixed volume.
• Inter particle distances are largest.
• Highly compressible.
• Density is least and diffuse.
• Inter particle forces of attraction are weakest.
• Constituent particles are free to move about.